diff --git a/README.md b/README.md
index 5f2e3fd4..3635a373 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,10 @@
 [![javadoc](https://javadoc.io/badge2/org.cornutum.tcases/tcases-shell/javadoc.svg?style=plastic)](https://javadoc.io/doc/org.cornutum.tcases/tcases-shell)
 
 ## What's New? ##
-  * The latest version ([Tcases 3.8.4](ReleaseNotes.md#384)) is now available at the Maven Central Repository.
+  * The latest version ([Tcases 3.8.5](ReleaseNotes.md#385)) is now available at the Maven Central Repository.
     See [*How To Download Tcases*](HowToDownload.md) for download instructions.
 
-  * Tcases 3.8.4 provides improvements to Tcases for OpenAPI. See the [release notes](ReleaseNotes.md#384) for details.
+  * Tcases 3.8.5 provides improvements to Tcases for OpenAPI. See the [release notes](ReleaseNotes.md#385) for details.
 
   * Having trouble with Tcases? Check out [these tips](./Troubleshooting-FAQs.md).
 
diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index 58b63f08..4d0c73e2 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,5 +1,35 @@
 # Release Notes #
 
+## 3.8.5 ##
+
+This release provides the following improvements to Tcases for OpenAPI.
+
+  * **New option to handle untrusted API servers**
+
+    When generated tests perform API requests using HTTPS, the API server is normally required to
+    verify that it can be trusted by presenting a valid server certificate. But during testing, this
+    might not be possible. For example, the test server might not have a certificate, or it may not
+    be possible to verify that the certificate is trusted in the test environment. To handle this
+    situation, you can generate tests by running `tcases-api-test` with the new `-V` option (or, if
+    using Maven, by running `tcases:api-test` with the `-DtrustServer=true` parameter). This produces
+    tests that connect to the API without checking the server certificate.
+
+  * **Better message when schema type is inconsistent or ambiguous**
+
+    Tcases for OpenAPI doesn't accept an OpenAPI definition that contains a [type-ambiguous
+    schema](tcases-openapi/README.md#openapi-tips). For example, see [this
+    discussion](https://github.com/Cornutum/tcases/discussions/251). But if one is found, you'll now
+    see a more helpful error message that identifies the cause of the problem.
+
+  * **Better handling of generated helper methods**
+
+    The source code for generated tests includes certain helper methods, such as `isBadRequest()`, etc. In this
+    release, such methods are included only if they are needed -- no more "unused private method" warnings.
+
+  * **Upgraded dependencies**
+
+    Upgraded to swagger-parser 2.1.6.
+
 ## 3.8.4 ##
 
 This release provides the following improvements to Tcases for OpenAPI.
diff --git a/pom.xml b/pom.xml
index 6016d12d..e5286476 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
   <groupId>org.cornutum.tcases</groupId>
   <artifactId>tcases</artifactId>
   <packaging>pom</packaging>
-  <version>3.8.5-SNAPSHOT</version>
+  <version>3.8.5</version>
 
   <name>Tcases</name>
   <description>Generates test cases from system input space models</description>
diff --git a/tcases-ant/pom.xml b/tcases-ant/pom.xml
index bde358ac..68338af3 100644
--- a/tcases-ant/pom.xml
+++ b/tcases-ant/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.cornutum.tcases</groupId>
     <artifactId>tcases</artifactId>
-    <version>3.8.5-SNAPSHOT</version>
+    <version>3.8.5</version>
   </parent>
 
   <artifactId>tcases-ant</artifactId>
diff --git a/tcases-cli/pom.xml b/tcases-cli/pom.xml
index a5c72d16..18f2346c 100644
--- a/tcases-cli/pom.xml
+++ b/tcases-cli/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.cornutum.tcases</groupId>
         <artifactId>tcases</artifactId>
-        <version>3.8.5-SNAPSHOT</version>
+        <version>3.8.5</version>
     </parent>
 
     <artifactId>tcases-cli</artifactId>
diff --git a/tcases-io/pom.xml b/tcases-io/pom.xml
index c135d90f..73fd5f7e 100644
--- a/tcases-io/pom.xml
+++ b/tcases-io/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.cornutum.tcases</groupId>
         <artifactId>tcases</artifactId>
-        <version>3.8.5-SNAPSHOT</version>
+        <version>3.8.5</version>
     </parent>
 
     <artifactId>tcases-io</artifactId>
diff --git a/tcases-lib/pom.xml b/tcases-lib/pom.xml
index 740cd552..9279400a 100755
--- a/tcases-lib/pom.xml
+++ b/tcases-lib/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.cornutum.tcases</groupId>
     <artifactId>tcases</artifactId>
-    <version>3.8.5-SNAPSHOT</version>
+    <version>3.8.5</version>
   </parent>
 
   <artifactId>tcases-lib</artifactId>
diff --git a/tcases-maven-plugin/pom.xml b/tcases-maven-plugin/pom.xml
index c7f0b0ca..d5866ea4 100755
--- a/tcases-maven-plugin/pom.xml
+++ b/tcases-maven-plugin/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.cornutum.tcases</groupId>
     <artifactId>tcases</artifactId>
-    <version>3.8.5-SNAPSHOT</version>
+    <version>3.8.5</version>
   </parent>
 
   <artifactId>tcases-maven-plugin</artifactId>
diff --git a/tcases-moco/pom.xml b/tcases-moco/pom.xml
index cb711f54..17e84603 100644
--- a/tcases-moco/pom.xml
+++ b/tcases-moco/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.cornutum.tcases</groupId>
         <artifactId>tcases</artifactId>
-        <version>3.8.5-SNAPSHOT</version>
+        <version>3.8.5</version>
     </parent>
 
     <artifactId>tcases-moco</artifactId>
diff --git a/tcases-openapi-test/pom.xml b/tcases-openapi-test/pom.xml
index ea1a74bc..5c21955e 100644
--- a/tcases-openapi-test/pom.xml
+++ b/tcases-openapi-test/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.cornutum.tcases</groupId>
         <artifactId>tcases</artifactId>
-        <version>3.8.5-SNAPSHOT</version>
+        <version>3.8.5</version>
     </parent>
 
     <artifactId>tcases-openapi-test</artifactId>
diff --git a/tcases-openapi/pom.xml b/tcases-openapi/pom.xml
index 46b48811..e660ca2c 100644
--- a/tcases-openapi/pom.xml
+++ b/tcases-openapi/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.cornutum.tcases</groupId>
         <artifactId>tcases</artifactId>
-        <version>3.8.5-SNAPSHOT</version>
+        <version>3.8.5</version>
     </parent>
 
     <artifactId>tcases-openapi</artifactId>
@@ -54,7 +54,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.build.date>${maven.build.timestamp}</project.build.date>
         <maven.build.timestamp.format>yyyy-MM-dd</maven.build.timestamp.format>
-        <tcases.maven.version>3.8.2</tcases.maven.version>
+        <tcases.maven.version>3.8.5</tcases.maven.version>
     </properties>
 
     <build>
diff --git a/tcases-rest-assured/pom.xml b/tcases-rest-assured/pom.xml
index 9e01f38f..9a54d146 100644
--- a/tcases-rest-assured/pom.xml
+++ b/tcases-rest-assured/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.cornutum.tcases</groupId>
         <artifactId>tcases</artifactId>
-        <version>3.8.5-SNAPSHOT</version>
+        <version>3.8.5</version>
     </parent>
 
     <artifactId>tcases-rest-assured</artifactId>
diff --git a/tcases-shell/pom.xml b/tcases-shell/pom.xml
index 76480aa3..53d2fbf0 100755
--- a/tcases-shell/pom.xml
+++ b/tcases-shell/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.cornutum.tcases</groupId>
     <artifactId>tcases</artifactId>
-    <version>3.8.5-SNAPSHOT</version>
+    <version>3.8.5</version>
   </parent>
 
   <artifactId>tcases-shell</artifactId>