diff --git a/license-report.md b/license-report.md
index 5657cd9c0f6..d1dcf81091e 100644
--- a/license-report.md
+++ b/license-report.md
@@ -1,6 +1,6 @@
 
     
-# Dependencies of `io.spine:spine-client:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine:spine-client:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -399,12 +399,12 @@
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:30 WET 2023** 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 **Thu Apr 20 16:31:59 WEST 2023** 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-core:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine:spine-core:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.code.findbugs **Name:** jsr305 **Version:** 3.0.2
@@ -763,12 +763,12 @@ This report was generated on **Mon Mar 06 13:09:30 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:31 WET 2023** 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 **Thu Apr 20 16:32:00 WEST 2023** 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.tools:spine-model-assembler:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine.tools:spine-model-assembler:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -1162,12 +1162,12 @@ This report was generated on **Mon Mar 06 13:09:31 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:32 WET 2023** 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 **Thu Apr 20 16:32:01 WEST 2023** 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.tools:spine-model-verifier:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine.tools:spine-model-verifier:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -1627,12 +1627,12 @@ This report was generated on **Mon Mar 06 13:09:32 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:33 WET 2023** 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 **Thu Apr 20 16:32:03 WEST 2023** 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-server:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine:spine-server:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -2039,12 +2039,12 @@ This report was generated on **Mon Mar 06 13:09:33 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:34 WET 2023** 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 **Thu Apr 20 16:32:04 WEST 2023** 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-client:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine:spine-testutil-client:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -2493,12 +2493,12 @@ This report was generated on **Mon Mar 06 13:09:34 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:37 WET 2023** 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 **Thu Apr 20 16:32:07 WEST 2023** 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-core:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine:spine-testutil-core:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -2947,12 +2947,12 @@ This report was generated on **Mon Mar 06 13:09:37 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:38 WET 2023** 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 **Thu Apr 20 16:32:08 WEST 2023** 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-server:1.9.0-SNAPSHOT.10`
+# Dependencies of `io.spine:spine-testutil-server:1.9.0-SNAPSHOT.12`
 
 ## Runtime
 1. **Group:** com.google.android **Name:** annotations **Version:** 4.1.1.4
@@ -3445,4 +3445,4 @@ This report was generated on **Mon Mar 06 13:09:38 WET 2023** using [Gradle-Lice
  The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
 
-This report was generated on **Mon Mar 06 13:09:42 WET 2023** 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 **Thu Apr 20 16:32:13 WEST 2023** 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 880ab5a95a0..5d654a317b5 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-core-java</artifactId>
-<version>1.9.0-SNAPSHOT.10</version>
+<version>1.9.0-SNAPSHOT.12</version>
 
 <inceptionYear>2015</inceptionYear>
 
diff --git a/server/src/test/java/io/spine/testdata/Sample.java b/server/src/test/java/io/spine/testdata/Sample.java
index 3a487f87b21..4fc59cbcf5b 100644
--- a/server/src/test/java/io/spine/testdata/Sample.java
+++ b/server/src/test/java/io/spine/testdata/Sample.java
@@ -43,6 +43,7 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.Random;
+import java.util.UUID;
 
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -163,9 +164,8 @@ private static Object valueFor(FieldDescriptor field) {
             case BOOLEAN:
                 return random.nextBoolean();
             case STRING:
-                byte[] bytes = new byte[8];
-                random.nextBytes(bytes);
-                return new String(bytes, Charsets.UTF_8);
+                return UUID.randomUUID()
+                           .toString();
             case BYTE_STRING:
                 byte[] bytesPrimitive = new byte[8];
                 random.nextBytes(bytesPrimitive);
diff --git a/version.gradle.kts b/version.gradle.kts
index 221496efb51..c815657856b 100644
--- a/version.gradle.kts
+++ b/version.gradle.kts
@@ -34,7 +34,7 @@
 /**
  * Version of this library.
  */
-val coreJava = "1.9.0-SNAPSHOT.11"
+val coreJava = "1.9.0-SNAPSHOT.12"
 
 /**
  * Versions of the Spine libraries that `core-java` depends on.