diff --git a/build.gradle b/build.gradle
index d9980831c..cda16c26f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -168,7 +168,7 @@ subprojects {
                     "com.google.http-client:google-http-client:1.29.0",
                     "com.google.http-client:google-http-client-jackson2:1.29.0",
 
-                    "com.google.api-client:google-api-client:1.25.0",
+                    "com.google.api-client:google-api-client:1.30.9",
 
                     "org.apache.httpcomponents:httpclient:4.5.5",
 
diff --git a/client-js/package.json b/client-js/package.json
index b56370cec..f0caebb04 100644
--- a/client-js/package.json
+++ b/client-js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "spine-web",
-  "version": "1.5.0",
+  "version": "1.5.2",
   "license": "Apache-2.0",
   "description": "A JS client for interacting with Spine applications.",
   "homepage": "https://spine.io",
diff --git a/firebase-web/src/main/java/io/spine/web/firebase/FirebaseClientFactory.java b/firebase-web/src/main/java/io/spine/web/firebase/FirebaseClientFactory.java
index 2d58e6830..bddfb67dc 100644
--- a/firebase-web/src/main/java/io/spine/web/firebase/FirebaseClientFactory.java
+++ b/firebase-web/src/main/java/io/spine/web/firebase/FirebaseClientFactory.java
@@ -21,7 +21,6 @@
 package io.spine.web.firebase;
 
 import com.google.api.client.extensions.appengine.http.UrlFetchTransport;
-import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
 import com.google.api.client.http.HttpRequestFactory;
 import com.google.api.client.http.HttpTransport;
 import com.google.api.client.http.apache.ApacheHttpTransport;
@@ -149,8 +148,7 @@ private static FirebaseClient createAuthorized(HttpTransport httpTransport,
                                                    FirebaseDatabase database,
                                                    FirebaseCredentials credentials,
                                                    Supplier<BackOff> backOff) {
-        GoogleCredential googleCredentials = credentials.credentials();
-        HttpRequestFactory requestFactory = httpTransport.createRequestFactory(googleCredentials);
+        HttpRequestFactory requestFactory = httpTransport.createRequestFactory(credentials);
         return RemoteDatabaseClient
                 .newBuilder()
                 .setDatabase(database)
diff --git a/firebase-web/src/main/java/io/spine/web/firebase/FirebaseCredentials.java b/firebase-web/src/main/java/io/spine/web/firebase/FirebaseCredentials.java
index 336622bc2..9035341ca 100644
--- a/firebase-web/src/main/java/io/spine/web/firebase/FirebaseCredentials.java
+++ b/firebase-web/src/main/java/io/spine/web/firebase/FirebaseCredentials.java
@@ -21,25 +21,33 @@
 package io.spine.web.firebase;
 
 import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
+import com.google.api.client.http.HttpRequest;
+import com.google.api.client.http.HttpRequestInitializer;
+import com.google.auth.http.HttpCredentialsAdapter;
+import com.google.auth.oauth2.GoogleCredentials;
+import com.google.common.annotations.VisibleForTesting;
+import io.spine.annotation.Internal;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
-import javax.annotation.Nullable;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.Collection;
 
 import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkState;
 import static io.spine.util.Exceptions.newIllegalArgumentException;
 import static java.util.Arrays.asList;
 
 /**
  * A Firebase Database credentials.
  *
- * <p>The underlying Google OAuth 2.0 service can be used as an authentication facility for the
- * requests to Firebase REST API.
+ * <p>This type can be used as an authentication facility for the requests to Firebase REST API.
  *
  * <p>See <a href="https://firebase.google.com/docs/database/rest/auth">Firebase REST docs</a>.
  */
-public final class FirebaseCredentials {
+@SuppressWarnings("deprecation")
+// Use deprecated `GoogleCredential` to retain backward compatibility.
+public final class FirebaseCredentials implements HttpRequestInitializer {
 
     private static final String AUTH_DATABASE = "https://www.googleapis.com/auth/firebase.database";
     private static final String AUTH_USER_EMAIL = "https://www.googleapis.com/auth/userinfo.email";
@@ -49,14 +57,33 @@ public final class FirebaseCredentials {
      */
     private static final Collection<String> AUTH_SCOPES = asList(AUTH_DATABASE, AUTH_USER_EMAIL);
 
-    private final GoogleCredential credentials;
+    /**
+     * The credential used for authentication.
+     *
+     * <p>Either this field or {@link #oldStyleCredential} will always be {@code null}.
+     */
+    private final @Nullable GoogleCredentials credentials;
+
+    /**
+     * The credential used for authentication.
+     *
+     * <p>Either this field or {@link #credentials} will always be {@code null}.
+     */
+    private final @Nullable GoogleCredential oldStyleCredential;
 
     private FirebaseCredentials() {
         this.credentials = null;
+        this.oldStyleCredential = null;
     }
 
-    private FirebaseCredentials(GoogleCredential credentials) {
+    private FirebaseCredentials(GoogleCredentials credentials) {
         this.credentials = credentials;
+        this.oldStyleCredential = null;
+    }
+
+    private FirebaseCredentials(GoogleCredential credential) {
+        this.credentials = null;
+        this.oldStyleCredential = credential;
     }
 
     /**
@@ -69,16 +96,32 @@ public static FirebaseCredentials empty() {
     }
 
     /**
-     * Creates a new {@code FirebaseCredentials} from the given {@link GoogleCredential}.
+     * Creates a new {@code FirebaseCredentials} from the given {@link GoogleCredentials}.
      *
-     * <p>The method sets scopes required for Firebase.
+     * <p>This method sets scopes required to use the Firebase database.
      *
-     * <p>The method is useful to create credentials from the
-     * {@linkplain GoogleCredential#getApplicationDefault() application default credentials}.
+     * <p>This method is useful to create credentials from the
+     * {@linkplain GoogleCredentials#getApplicationDefault() application default credentials}.
      *
-     * @param credentials the credentials to create from
+     * @param credentials
+     *         the credentials to create from
      * @return a new instance of {@code FirebaseCredentials}
      */
+    public static FirebaseCredentials fromGoogleCredentials(GoogleCredentials credentials) {
+        checkNotNull(credentials);
+        GoogleCredentials scopedCredential = credentials.createScoped(AUTH_SCOPES);
+        return new FirebaseCredentials(scopedCredential);
+    }
+
+    /**
+     * Creates a new {@code FirebaseCredentials} from the given {@link GoogleCredentials}.
+     *
+     * <p>This method sets scopes required to use the Firebase database.
+     *
+     * @deprecated please use {@link #fromGoogleCredentials(GoogleCredentials)} or any other
+     *             alternative instead
+     */
+    @Deprecated
     public static FirebaseCredentials fromGoogleCredentials(GoogleCredential credentials) {
         checkNotNull(credentials);
         GoogleCredential scopedCredential = credentials.createScoped(AUTH_SCOPES);
@@ -98,37 +141,50 @@ public static FirebaseCredentials fromGoogleCredentials(GoogleCredential credent
      * @return a new instance of {@code FirebaseCredentials}
      * @throws java.lang.IllegalArgumentException
      *         in case there are problems with parsing the given stream into
-     *         {@link GoogleCredential}
+     *         {@link GoogleCredentials}
      */
     public static FirebaseCredentials fromStream(InputStream credentialStream) {
         checkNotNull(credentialStream);
-        GoogleCredential credentials = parseCredentials(credentialStream);
+        GoogleCredentials credentials = parseCredentials(credentialStream);
         return fromGoogleCredentials(credentials);
     }
 
     /**
-     * Checks if the instance of the {@code FirebaseCredentials} is empty.
+     * Authenticates a given {@link HttpRequest} with the wrapped Google credentials instance.
      *
-     * @return {@code true} if {@code FirebaseCredentials} are empty and {@code false} otherwise
+     * @throws IllegalStateException
+     *         if this instance of {@code FirebaseCredentials} is {@linkplain #isEmpty() empty}
      */
-    public boolean isEmpty() {
-        return credentials == null;
+    @Internal
+    @Override
+    public void initialize(HttpRequest request) throws IOException {
+        checkState(!isEmpty(),
+                   "An empty credentials instance cannot serve as HTTP request initializer.");
+        if (isOldStyle()) {
+            oldStyleCredential.initialize(request);
+        } else {
+            HttpRequestInitializer adapter = new HttpCredentialsAdapter(credentials);
+            adapter.initialize(request);
+        }
     }
 
     /**
-     * Returns the underlying Google credentials.
+     * Checks if the instance of the {@code FirebaseCredentials} is empty.
      *
-     * @return the underlying credentials or {@code null} if the credentials are
-     *         {@linkplain #isEmpty() empty}
+     * @return {@code true} if {@code FirebaseCredentials} are empty and {@code false} otherwise
      */
-    @Nullable
-    GoogleCredential credentials() {
-        return credentials;
+    public boolean isEmpty() {
+        return credentials == null && oldStyleCredential == null;
+    }
+
+    @VisibleForTesting
+    boolean isOldStyle() {
+        return oldStyleCredential != null;
     }
 
-    private static GoogleCredential parseCredentials(InputStream credentialStream) {
+    private static GoogleCredentials parseCredentials(InputStream credentialStream) {
         try {
-            GoogleCredential credentials = GoogleCredential.fromStream(credentialStream);
+            GoogleCredentials credentials = GoogleCredentials.fromStream(credentialStream);
             return credentials;
         } catch (IOException e) {
             throw newIllegalArgumentException(
diff --git a/firebase-web/src/test/java/io/spine/web/firebase/FirebaseClientFactoryTest.java b/firebase-web/src/test/java/io/spine/web/firebase/FirebaseClientFactoryTest.java
index 4ead269aa..36e23fff3 100644
--- a/firebase-web/src/test/java/io/spine/web/firebase/FirebaseClientFactoryTest.java
+++ b/firebase-web/src/test/java/io/spine/web/firebase/FirebaseClientFactoryTest.java
@@ -20,7 +20,6 @@
 
 package io.spine.web.firebase;
 
-import com.google.api.client.googleapis.testing.auth.oauth2.MockGoogleCredential;
 import com.google.auth.oauth2.AccessToken;
 import com.google.auth.oauth2.GoogleCredentials;
 import com.google.common.testing.NullPointerTester;
@@ -39,16 +38,12 @@
 import java.util.Date;
 
 import static com.google.common.truth.Truth.assertThat;
-import static io.spine.web.firebase.FirebaseCredentials.fromGoogleCredentials;
 import static org.mockito.Mockito.mock;
 
-@DisplayName("FirebaseClientFactory should")
+@DisplayName("`FirebaseClientFactory` should")
 class FirebaseClientFactoryTest extends UtilityClassTest<FirebaseClientFactory> {
 
-    private static final MockGoogleCredential GOOGLE_CREDENTIALS =
-            new MockGoogleCredential.Builder().build();
-    private static final FirebaseCredentials CREDENTIALS =
-            fromGoogleCredentials(GOOGLE_CREDENTIALS);
+    private static final FirebaseCredentials CREDENTIALS = FirebaseCredentials.empty();
     private static final String FIREBASE_APP_NAME = FirebaseClientFactoryTest.class.getSimpleName();
     private FirebaseDatabase database = mock(FirebaseDatabase.class);
 
diff --git a/firebase-web/src/test/java/io/spine/web/firebase/FirebaseCredentialsTest.java b/firebase-web/src/test/java/io/spine/web/firebase/FirebaseCredentialsTest.java
index 3e33455fb..0ba956341 100644
--- a/firebase-web/src/test/java/io/spine/web/firebase/FirebaseCredentialsTest.java
+++ b/firebase-web/src/test/java/io/spine/web/firebase/FirebaseCredentialsTest.java
@@ -20,18 +20,22 @@
 
 package io.spine.web.firebase;
 
+import com.google.api.client.googleapis.testing.auth.oauth2.MockGoogleCredential;
+import com.google.auth.oauth2.GoogleCredentials;
 import com.google.common.testing.NullPointerTester;
 import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 
+import static com.google.common.truth.Truth.assertThat;
 import static io.spine.testing.DisplayNames.NOT_ACCEPT_NULLS;
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
-@DisplayName("FirebaseCredentials should")
+@DisplayName("`FirebaseCredentials` should")
 class FirebaseCredentialsTest {
 
     @Test
@@ -40,9 +44,43 @@ void passNullToleranceCheck() {
         new NullPointerTester().testAllPublicStaticMethods(FirebaseCredentials.class);
     }
 
+    @Nested
+    @DisplayName("be created")
+    class BeCreated {
+
+        @Test
+        @DisplayName("without credentials")
+        void empty() {
+            FirebaseCredentials credentials = FirebaseCredentials.empty();
+            assertThat(credentials.isEmpty()).isTrue();
+        }
+
+        @Test
+        @DisplayName("from `GoogleCredentials` instance")
+        void fromGoogleCredentials() {
+            GoogleCredentials googleCredentials = GoogleCredentials.newBuilder()
+                                                                   .build();
+            FirebaseCredentials credentials =
+                    FirebaseCredentials.fromGoogleCredentials(googleCredentials);
+            assertThat(credentials.isEmpty()).isFalse();
+            assertThat(credentials.isOldStyle()).isFalse();
+        }
+
+        @SuppressWarnings("deprecation") // This test checks the deprecated method.
+        @Test
+        @DisplayName("from `GoogleCredential` instance")
+        void fromOldStyleCredentials() {
+            MockGoogleCredential googleCredential = new MockGoogleCredential.Builder().build();
+            FirebaseCredentials credentials =
+                    FirebaseCredentials.fromGoogleCredentials(googleCredential);
+            assertThat(credentials.isEmpty()).isFalse();
+            assertThat(credentials.isOldStyle()).isTrue();
+        }
+    }
+
     @SuppressWarnings({"CheckReturnValue", "ResultOfMethodCallIgnored"})
     @Test
-    @DisplayName("throw IAE when created from invalid data")
+    @DisplayName("throw `IAE` when created from invalid data")
     void throwOnInvalidData() {
         String invalidCredentials = "invalid_credentials";
         InputStream stream = toInputStream(invalidCredentials);
diff --git a/integration-tests/js-tests/package.json b/integration-tests/js-tests/package.json
index 90f1dcb43..ecd97d372 100644
--- a/integration-tests/js-tests/package.json
+++ b/integration-tests/js-tests/package.json
@@ -1,6 +1,6 @@
 {
   "name": "client-js-tests",
-  "version": "1.5.0",
+  "version": "1.5.2",
   "license": "Apache-2.0",
   "description": "Tests of a `spine-web` JS library against the Spine-based application.",
   "scripts": {
diff --git a/integration-tests/test-app/src/main/java/io/spine/web/test/given/Application.java b/integration-tests/test-app/src/main/java/io/spine/web/test/given/Application.java
index 711cc509e..69392d15e 100644
--- a/integration-tests/test-app/src/main/java/io/spine/web/test/given/Application.java
+++ b/integration-tests/test-app/src/main/java/io/spine/web/test/given/Application.java
@@ -20,7 +20,6 @@
 
 package io.spine.web.test.given;
 
-import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
 import com.google.auth.oauth2.GoogleCredentials;
 import com.google.firebase.FirebaseApp;
 import com.google.firebase.FirebaseOptions;
@@ -95,12 +94,9 @@ static Application create(BoundedContext boundedContext) {
     private static FirebaseClient buildClient() {
         Resource googleCredentialsFile = Resource.file("spine-dev.json");
 
-        // Same credentials but represented with different Java objects.
         GoogleCredentials credentials;
-        GoogleCredential credential;
         try {
             credentials = GoogleCredentials.fromStream(googleCredentialsFile.open());
-            credential = GoogleCredential.fromStream(googleCredentialsFile.open());
         } catch (IOException e) {
             throw new IllegalStateException(e);
         }
@@ -112,7 +108,7 @@ private static FirebaseClient buildClient() {
         FirebaseApp.initializeApp(options);
 
         FirebaseDatabase database = FirebaseDatabase.getInstance();
-        FirebaseCredentials firebaseCredentials = fromGoogleCredentials(credential);
+        FirebaseCredentials firebaseCredentials = fromGoogleCredentials(credentials);
         FirebaseClient firebaseClient = remoteClient(database, firebaseCredentials);
         return new TidyClient(firebaseClient);
     }
diff --git a/license-report.md b/license-report.md
index bbce290da..14738f0b8 100644
--- a/license-report.md
+++ b/license-report.md
@@ -1,6 +1,6 @@
 
     
-# Dependencies of `io.spine:spine-client-js:1.5.1`
+# Dependencies of `io.spine:spine-client-js:1.5.2`
 
 ## Runtime
 1. **Group:** com.google.code.findbugs **Name:** jsr305 **Version:** 3.0.2
@@ -390,10 +390,10 @@
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Mar 17 02:55:29 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
-#NPM dependencies of `spine-web@1.5.1`
+#NPM dependencies of `spine-web@1.5.2`
 
 ## `Production` dependencies:
 
@@ -424,7 +424,7 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **safer-buffer@2.1.2**
      * Licenses: MIT
      * Repository: [https://github.com/ChALkeR/safer-buffer](https://github.com/ChALkeR/safer-buffer)
-1. **spine-web@1.5.1**
+1. **spine-web@1.5.2**
      * Licenses: Apache-2.0
      * Repository: [https://github.com/SpineEventEngine/web](https://github.com/SpineEventEngine/web)
 1. **tslib@1.10.0**
@@ -801,12 +801,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **@tootallnate/once@1.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/TooTallNate/once](https://github.com/TooTallNate/once)
-1. **@types/bytebuffer@5.0.40**
-     * Licenses: MIT
-     * Repository: [https://github.com/DefinitelyTyped/DefinitelyTyped](https://github.com/DefinitelyTyped/DefinitelyTyped)
-1. **@types/long@4.0.1**
-     * Licenses: MIT
-     * Repository: [https://github.com/DefinitelyTyped/DefinitelyTyped](https://github.com/DefinitelyTyped/DefinitelyTyped)
 1. **@types/node@10.17.17**
      * Licenses: MIT
      * Repository: [https://github.com/DefinitelyTyped/DefinitelyTyped](https://github.com/DefinitelyTyped/DefinitelyTyped)
@@ -945,9 +939,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **asap@2.0.6**
      * Licenses: MIT
      * Repository: [https://github.com/kriskowal/asap](https://github.com/kriskowal/asap)
-1. **ascli@1.0.1**
-     * Licenses: Apache-2.0
-     * Repository: [https://github.com/dcodeIO/ascli](https://github.com/dcodeIO/ascli)
 1. **asn1.js@4.10.1**
      * Licenses: MIT
      * Repository: [https://github.com/indutny/asn1.js](https://github.com/indutny/asn1.js)
@@ -1059,9 +1050,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **builtin-status-codes@3.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/bendrucker/builtin-status-codes](https://github.com/bendrucker/builtin-status-codes)
-1. **bytebuffer@5.0.1**
-     * Licenses: Apache-2.0
-     * Repository: [https://github.com/dcodeIO/bytebuffer.js](https://github.com/dcodeIO/bytebuffer.js)
 1. **cacache@12.0.3**
      * Licenses: ISC
      * Repository: [https://github.com/npm/cacache](https://github.com/npm/cacache)
@@ -1071,9 +1059,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **caching-transform@3.0.2**
      * Licenses: MIT
      * Repository: [https://github.com/istanbuljs/caching-transform](https://github.com/istanbuljs/caching-transform)
-1. **camelcase@2.1.1**
-     * Licenses: MIT
-     * Repository: [https://github.com/sindresorhus/camelcase](https://github.com/sindresorhus/camelcase)
 1. **camelcase@5.3.1**
      * Licenses: MIT
      * Repository: [https://github.com/sindresorhus/camelcase](https://github.com/sindresorhus/camelcase)
@@ -1104,9 +1089,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **class-utils@0.3.6**
      * Licenses: MIT
      * Repository: [https://github.com/jonschlinkert/class-utils](https://github.com/jonschlinkert/class-utils)
-1. **cliui@3.2.0**
-     * Licenses: ISC
-     * Repository: [https://github.com/yargs/cliui](https://github.com/yargs/cliui)
 1. **cliui@5.0.0**
      * Licenses: ISC
      * Repository: [https://github.com/yargs/cliui](https://github.com/yargs/cliui)
@@ -1125,9 +1107,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **color-name@1.1.3**
      * Licenses: MIT
      * Repository: [https://github.com/dfcreative/color-name](https://github.com/dfcreative/color-name)
-1. **colour@0.7.1**
-     * Licenses: MIT
-     * Repository: [https://github.com/dcodeIO/colour.js](https://github.com/dcodeIO/colour.js)
 1. **commander@2.15.1**
      * Licenses: MIT
      * Repository: [https://github.com/tj/commander.js](https://github.com/tj/commander.js)
@@ -1218,9 +1197,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **debuglog@1.0.1**
      * Licenses: MIT
      * Repository: [https://github.com/sam-github/node-debuglog](https://github.com/sam-github/node-debuglog)
-1. **decamelize@1.2.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/sindresorhus/decamelize](https://github.com/sindresorhus/decamelize)
 1. **decode-uri-component@0.2.0**
      * Licenses: MIT
      * Repository: [https://github.com/SamVerschueren/decode-uri-component](https://github.com/SamVerschueren/decode-uri-component)
@@ -1287,9 +1263,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **emojis-list@3.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/kikobeats/emojis-list](https://github.com/kikobeats/emojis-list)
-1. **end-of-stream@1.4.4**
-     * Licenses: MIT
-     * Repository: [https://github.com/mafintosh/end-of-stream](https://github.com/mafintosh/end-of-stream)
 1. **enhanced-resolve@4.1.0**
      * Licenses: MIT
      * Repository: [https://github.com/webpack/enhanced-resolve](https://github.com/webpack/enhanced-resolve)
@@ -1419,9 +1392,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **get-caller-file@2.0.5**
      * Licenses: ISC
      * Repository: [https://github.com/stefanpenner/get-caller-file](https://github.com/stefanpenner/get-caller-file)
-1. **get-stream@4.1.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/sindresorhus/get-stream](https://github.com/sindresorhus/get-stream)
 1. **get-value@2.0.6**
      * Licenses: MIT
      * Repository: [https://github.com/jonschlinkert/get-value](https://github.com/jonschlinkert/get-value)
@@ -1434,9 +1404,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **glob@7.1.4**
      * Licenses: ISC
      * Repository: [https://github.com/isaacs/node-glob](https://github.com/isaacs/node-glob)
-1. **glob@7.1.6**
-     * Licenses: ISC
-     * Repository: [https://github.com/isaacs/node-glob](https://github.com/isaacs/node-glob)
 1. **global-modules@1.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/jonschlinkert/global-modules](https://github.com/jonschlinkert/global-modules)
@@ -1572,9 +1539,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **invariant@2.2.4**
      * Licenses: MIT
      * Repository: [https://github.com/zertosh/invariant](https://github.com/zertosh/invariant)
-1. **invert-kv@1.0.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/sindresorhus/invert-kv](https://github.com/sindresorhus/invert-kv)
 1. **invert-kv@2.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/sindresorhus/invert-kv](https://github.com/sindresorhus/invert-kv)
@@ -1716,9 +1680,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **kind-of@6.0.3**
      * Licenses: MIT
      * Repository: [https://github.com/jonschlinkert/kind-of](https://github.com/jonschlinkert/kind-of)
-1. **lcid@1.0.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/sindresorhus/lcid](https://github.com/sindresorhus/lcid)
 1. **lcid@2.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/sindresorhus/lcid](https://github.com/sindresorhus/lcid)
@@ -1749,12 +1710,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **locate-path@3.0.0**
      * Licenses: MIT
      * Repository: [https://github.com/sindresorhus/locate-path](https://github.com/sindresorhus/locate-path)
-1. **lodash.camelcase@4.3.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/lodash/lodash](https://github.com/lodash/lodash)
-1. **lodash.clone@4.5.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/lodash/lodash](https://github.com/lodash/lodash)
 1. **lodash.flattendeep@4.4.0**
      * Licenses: MIT
      * Repository: [https://github.com/lodash/lodash](https://github.com/lodash/lodash)
@@ -1767,9 +1722,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **lolex@5.1.2**
      * Licenses: BSD-3-Clause
      * Repository: [https://github.com/sinonjs/lolex](https://github.com/sinonjs/lolex)
-1. **long@3.2.0**
-     * Licenses: Apache-2.0
-     * Repository: [https://github.com/dcodeIO/long.js](https://github.com/dcodeIO/long.js)
 1. **long@4.0.0**
      * Licenses: Apache-2.0
      * Repository: [https://github.com/dcodeIO/long.js](https://github.com/dcodeIO/long.js)
@@ -1836,9 +1788,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **minimist@1.2.0**
      * Licenses: MIT
      * Repository: [https://github.com/substack/minimist](https://github.com/substack/minimist)
-1. **minimist@1.2.5**
-     * Licenses: MIT
-     * Repository: [https://github.com/substack/minimist](https://github.com/substack/minimist)
 1. **minipass@2.3.5**
      * Licenses: ISC
      * Repository: [https://github.com/isaacs/minipass](https://github.com/isaacs/minipass)
@@ -1866,9 +1815,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **ms@2.1.2**
      * Licenses: MIT
      * Repository: [https://github.com/zeit/ms](https://github.com/zeit/ms)
-1. **nan@2.14.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/nodejs/nan](https://github.com/nodejs/nan)
 1. **nanomatch@1.2.13**
      * Licenses: MIT
      * Repository: [https://github.com/micromatch/nanomatch](https://github.com/micromatch/nanomatch)
@@ -1959,18 +1905,12 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **once@1.4.0**
      * Licenses: ISC
      * Repository: [https://github.com/isaacs/once](https://github.com/isaacs/once)
-1. **optjs@3.2.2**
-     * Licenses: MIT
-     * Repository: [https://github.com/dcodeIO/opt.js](https://github.com/dcodeIO/opt.js)
 1. **os-browserify@0.3.0**
      * Licenses: MIT
      * Repository: [https://github.com/CoderPuppy/os-browserify](https://github.com/CoderPuppy/os-browserify)
 1. **os-homedir@1.0.2**
      * Licenses: MIT
      * Repository: [https://github.com/sindresorhus/os-homedir](https://github.com/sindresorhus/os-homedir)
-1. **os-locale@1.4.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/sindresorhus/os-locale](https://github.com/sindresorhus/os-locale)
 1. **os-locale@3.1.0**
      * Licenses: MIT
      * Repository: [https://github.com/sindresorhus/os-locale](https://github.com/sindresorhus/os-locale)
@@ -2088,9 +2028,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **promise-polyfill@8.1.3**
      * Licenses: MIT
      * Repository: [https://github.com/taylorhakes/promise-polyfill](https://github.com/taylorhakes/promise-polyfill)
-1. **protobufjs@5.0.3**
-     * Licenses: Apache-2.0
-     * Repository: [https://github.com/dcodeIO/protobuf.js](https://github.com/dcodeIO/protobuf.js)
 1. **protobufjs@6.8.9**
      * Licenses: BSD-3-Clause
      * Repository: [https://github.com/protobufjs/protobuf.js](https://github.com/protobufjs/protobuf.js)
@@ -2106,9 +2043,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **pump@2.0.1**
      * Licenses: MIT
      * Repository: [https://github.com/mafintosh/pump](https://github.com/mafintosh/pump)
-1. **pump@3.0.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/mafintosh/pump](https://github.com/mafintosh/pump)
 1. **pumpify@1.5.1**
      * Licenses: MIT
      * Repository: [https://github.com/mafintosh/pumpify](https://github.com/mafintosh/pumpify)
@@ -2256,9 +2190,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **semver@5.7.1**
      * Licenses: ISC
      * Repository: [https://github.com/npm/node-semver](https://github.com/npm/node-semver)
-1. **semver@6.3.0**
-     * Licenses: ISC
-     * Repository: [https://github.com/npm/node-semver](https://github.com/npm/node-semver)
 1. **semver@7.0.0**
      * Licenses: ISC
      * Repository: [https://github.com/npm/node-semver](https://github.com/npm/node-semver)
@@ -2346,7 +2277,7 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **spdx-satisfies@4.0.1**
      * Licenses: MIT
      * Repository: [https://github.com/kemitchell/spdx-satisfies.js](https://github.com/kemitchell/spdx-satisfies.js)
-1. **spine-web@1.5.1**
+1. **spine-web@1.5.2**
      * Licenses: Apache-2.0
      * Repository: [https://github.com/SpineEventEngine/web](https://github.com/SpineEventEngine/web)
 1. **split-string@3.1.0**
@@ -2565,15 +2496,9 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **wide-align@1.1.3**
      * Licenses: ISC
      * Repository: [https://github.com/iarna/wide-align](https://github.com/iarna/wide-align)
-1. **window-size@0.1.4**
-     * Licenses: MIT
-     * Repository: [https://github.com/jonschlinkert/window-size](https://github.com/jonschlinkert/window-size)
 1. **worker-farm@1.7.0**
      * Licenses: MIT
      * Repository: [https://github.com/rvagg/node-worker-farm](https://github.com/rvagg/node-worker-farm)
-1. **wrap-ansi@2.1.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/chalk/wrap-ansi](https://github.com/chalk/wrap-ansi)
 1. **wrap-ansi@5.1.0**
      * Licenses: MIT
      * Repository: [https://github.com/chalk/wrap-ansi](https://github.com/chalk/wrap-ansi)
@@ -2589,9 +2514,6 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **xtend@4.0.2**
      * Licenses: MIT
      * Repository: [https://github.com/Raynos/xtend](https://github.com/Raynos/xtend)
-1. **y18n@3.2.1**
-     * Licenses: ISC
-     * Repository: [https://github.com/yargs/y18n](https://github.com/yargs/y18n)
 1. **y18n@4.0.0**
      * Licenses: ISC
      * Repository: [https://github.com/yargs/y18n](https://github.com/yargs/y18n)
@@ -2604,26 +2526,23 @@ This report was generated on **Fri Mar 13 18:29:40 EET 2020** using [Gradle-Lice
 1. **yallist@3.1.1**
      * Licenses: ISC
      * Repository: [https://github.com/isaacs/yallist](https://github.com/isaacs/yallist)
-1. **yargs-parser@13.1.1**
+1. **yargs-parser@13.1.2**
      * Licenses: ISC
      * Repository: [https://github.com/yargs/yargs-parser](https://github.com/yargs/yargs-parser)
 1. **yargs@13.2.4**
      * Licenses: MIT
      * Repository: [https://github.com/yargs/yargs](https://github.com/yargs/yargs)
-1. **yargs@13.3.0**
+1. **yargs@13.3.2**
      * Licenses: MIT
      * Repository: [https://github.com/yargs/yargs](https://github.com/yargs/yargs)
-1. **yargs@3.32.0**
-     * Licenses: MIT
-     * Repository: [https://github.com/bcoe/yargs](https://github.com/bcoe/yargs)
 
 
-This report was generated on **Fri Mar 13 2020 18:29:46 GMT+0200 (Eastern European Standard Time)** using [NPM License Checker](https://github.com/davglass/license-checker) library.
+This report was generated on **Tue Mar 17 2020 02:55:34 GMT+0200 (Eastern European Standard Time)** using [NPM License Checker](https://github.com/davglass/license-checker) library.
 
 
 
     
-# Dependencies of `io.spine.gcloud:spine-firebase-web:1.5.1`
+# Dependencies of `io.spine.gcloud:spine-firebase-web:1.5.2`
 
 ## Runtime
 1. **Group:** com.fasterxml.jackson.core **Name:** jackson-annotations **Version:** 2.9.10
@@ -2658,7 +2577,7 @@ This report was generated on **Fri Mar 13 2020 18:29:46 GMT+0200 (Eastern Europe
      * **POM Project URL:** [https://github.com/googleapis/gax-java](https://github.com/googleapis/gax-java)
      * **POM License: BSD** - [https://github.com/googleapis/gax-java/blob/master/LICENSE](https://github.com/googleapis/gax-java/blob/master/LICENSE)
 
-1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.25.0
+1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.30.9
      * **Manifest Project URL:** [https://developers.google.com/api-client-library/java/](https://developers.google.com/api-client-library/java/)
      * **POM License: The Apache Software License, Version 2.0** - [http://www.apache.org/licenses/LICENSE-2.0.txt](http://www.apache.org/licenses/LICENSE-2.0.txt)
 
@@ -2951,7 +2870,7 @@ This report was generated on **Fri Mar 13 2020 18:29:46 GMT+0200 (Eastern Europe
      * **POM Project URL:** [https://github.com/googleapis/gax-java](https://github.com/googleapis/gax-java)
      * **POM License: BSD** - [https://github.com/googleapis/gax-java/blob/master/LICENSE](https://github.com/googleapis/gax-java/blob/master/LICENSE)
 
-1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.25.0
+1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.30.9
      * **Manifest Project URL:** [https://developers.google.com/api-client-library/java/](https://developers.google.com/api-client-library/java/)
      * **POM License: The Apache Software License, Version 2.0** - [http://www.apache.org/licenses/LICENSE-2.0.txt](http://www.apache.org/licenses/LICENSE-2.0.txt)
 
@@ -3433,12 +3352,12 @@ This report was generated on **Fri Mar 13 2020 18:29:46 GMT+0200 (Eastern Europe
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Fri Mar 13 18:29:57 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Mar 17 02:55:41 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
     
-# Dependencies of `io.spine:spine-js-tests:1.5.1`
+# Dependencies of `io.spine:spine-js-tests:1.5.2`
 
 ## Runtime
 1. **Group:** com.google.code.findbugs **Name:** jsr305 **Version:** 3.0.2
@@ -3858,12 +3777,12 @@ This report was generated on **Fri Mar 13 18:29:57 EET 2020** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Fri Mar 13 18:30:51 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Mar 17 02:57:09 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
     
-# Dependencies of `io.spine:spine-test-app:1.5.1`
+# Dependencies of `io.spine:spine-test-app:1.5.2`
 
 ## Runtime
 1. **Group:** com.fasterxml.jackson.core **Name:** jackson-annotations **Version:** 2.9.10
@@ -3898,7 +3817,7 @@ This report was generated on **Fri Mar 13 18:30:51 EET 2020** using [Gradle-Lice
      * **POM Project URL:** [https://github.com/googleapis/gax-java](https://github.com/googleapis/gax-java)
      * **POM License: BSD** - [https://github.com/googleapis/gax-java/blob/master/LICENSE](https://github.com/googleapis/gax-java/blob/master/LICENSE)
 
-1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.25.0
+1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.30.9
      * **Manifest Project URL:** [https://developers.google.com/api-client-library/java/](https://developers.google.com/api-client-library/java/)
      * **POM License: The Apache Software License, Version 2.0** - [http://www.apache.org/licenses/LICENSE-2.0.txt](http://www.apache.org/licenses/LICENSE-2.0.txt)
 
@@ -4208,7 +4127,7 @@ This report was generated on **Fri Mar 13 18:30:51 EET 2020** using [Gradle-Lice
      * **POM Project URL:** [https://github.com/googleapis/gax-java](https://github.com/googleapis/gax-java)
      * **POM License: BSD** - [https://github.com/googleapis/gax-java/blob/master/LICENSE](https://github.com/googleapis/gax-java/blob/master/LICENSE)
 
-1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.25.0
+1. **Group:** com.google.api-client **Name:** google-api-client **Version:** 1.30.9
      * **Manifest Project URL:** [https://developers.google.com/api-client-library/java/](https://developers.google.com/api-client-library/java/)
      * **POM License: The Apache Software License, Version 2.0** - [http://www.apache.org/licenses/LICENSE-2.0.txt](http://www.apache.org/licenses/LICENSE-2.0.txt)
 
@@ -5428,12 +5347,12 @@ This report was generated on **Fri Mar 13 18:30:51 EET 2020** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Fri Mar 13 18:30:57 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Mar 17 02:57:14 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
     
-# Dependencies of `io.spine:spine-testutil-web:1.5.1`
+# Dependencies of `io.spine:spine-testutil-web:1.5.2`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -5914,12 +5833,12 @@ This report was generated on **Fri Mar 13 18:30:57 EET 2020** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Fri Mar 13 18:30:58 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Tue Mar 17 02:57:15 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
     
-# Dependencies of `io.spine:spine-web:1.5.1`
+# Dependencies of `io.spine:spine-web:1.5.2`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -6429,4 +6348,4 @@ This report was generated on **Fri Mar 13 18:30:58 EET 2020** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Fri Mar 13 18:31:02 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
\ No newline at end of file
+This report was generated on **Tue Mar 17 02:57:19 EET 2020** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index b33e1ace0..bd6aa2615 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@ all modules and does not describe the project structure per-subproject.
 
 <groupId>io.spine</groupId>
 <artifactId>spine-web</artifactId>
-<version>1.5.1</version>
+<version>1.5.2</version>
 
 <inceptionYear>2015</inceptionYear>
 
diff --git a/version.gradle b/version.gradle
index 5d9da2450..98564b2e8 100644
--- a/version.gradle
+++ b/version.gradle
@@ -19,8 +19,8 @@
  */
 
 ext {
-    spineVersion = '1.5.1'
-    spineBaseVersion = spineVersion
+    spineVersion = '1.5.2'
+    spineBaseVersion = '1.5.1'
     spineCoreVersion = '1.5.0'
 
     versionToPublish = spineVersion