diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b57f795..0a2ab16b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+### [2.3.1](https://www.github.com/googleapis/java-recaptchaenterprise/compare/v2.3.0...v2.3.1) (2021-12-03)
+
+
+### Documentation
+
+* **samples:** added annotate assessment sample and refactored tests. ([#635](https://www.github.com/googleapis/java-recaptchaenterprise/issues/635)) ([436ae3e](https://www.github.com/googleapis/java-recaptchaenterprise/commit/436ae3ef9d5866654504c7d5bfbf6464197ceee6))
+* **samples:** updated comments in create assessment ([#641](https://www.github.com/googleapis/java-recaptchaenterprise/issues/641)) ([c0c9453](https://www.github.com/googleapis/java-recaptchaenterprise/commit/c0c9453b971aef2c9f9e75dea5d1d057819942aa))
+
+
+### Dependencies
+
+* update dependency com.google.cloud:google-cloud-shared-dependencies to v2.5.0 ([#639](https://www.github.com/googleapis/java-recaptchaenterprise/issues/639)) ([30d4ba3](https://www.github.com/googleapis/java-recaptchaenterprise/commit/30d4ba34fca40a99f0c34e62b25fc5f2e475e129))
+* update dependency com.google.cloud:google-cloud-shared-dependencies to v2.5.1 ([#658](https://www.github.com/googleapis/java-recaptchaenterprise/issues/658)) ([3f6bc29](https://www.github.com/googleapis/java-recaptchaenterprise/commit/3f6bc29ace2144482aa018f252c2b43721d99d6c))
+* update dependency net.bytebuddy:byte-buddy to v1.12.1 ([#632](https://www.github.com/googleapis/java-recaptchaenterprise/issues/632)) ([dc4f340](https://www.github.com/googleapis/java-recaptchaenterprise/commit/dc4f340bb5cda8e585b65eb1135b459a9e4f9b0d))
+* update dependency net.bytebuddy:byte-buddy to v1.12.2 ([#648](https://www.github.com/googleapis/java-recaptchaenterprise/issues/648)) ([0a89c68](https://www.github.com/googleapis/java-recaptchaenterprise/commit/0a89c684f453f21a55eb4f1f4a57bbc630b8f5b5))
+* update dependency org.seleniumhq.selenium:selenium-chrome-driver to v4.1.0 ([#649](https://www.github.com/googleapis/java-recaptchaenterprise/issues/649)) ([110f276](https://www.github.com/googleapis/java-recaptchaenterprise/commit/110f2762f1559a2107d84eab4a5d2402931de531))
+* update dependency org.seleniumhq.selenium:selenium-java to v4.1.0 ([#650](https://www.github.com/googleapis/java-recaptchaenterprise/issues/650)) ([4f39ada](https://www.github.com/googleapis/java-recaptchaenterprise/commit/4f39adaebead06eb2126db324d1d52b1f8bfe485))
+* update dependency org.springframework.boot:spring-boot-starter-test to v2.6.0 ([#644](https://www.github.com/googleapis/java-recaptchaenterprise/issues/644)) ([0682013](https://www.github.com/googleapis/java-recaptchaenterprise/commit/0682013c211eb7e4f5f995f3efd0952fdf61c136))
+* update dependency org.springframework.boot:spring-boot-starter-thymeleaf to v2.6.0 ([#645](https://www.github.com/googleapis/java-recaptchaenterprise/issues/645)) ([cd939fe](https://www.github.com/googleapis/java-recaptchaenterprise/commit/cd939fee210764d2703c133a390cc6ed7cd792b3))
+* update dependency org.springframework.boot:spring-boot-starter-web to v2.6.0 ([#646](https://www.github.com/googleapis/java-recaptchaenterprise/issues/646)) ([6b03b68](https://www.github.com/googleapis/java-recaptchaenterprise/commit/6b03b68662cd26603f20cc315a1b0f8f01ac8180))
+
 ## [2.3.0](https://www.github.com/googleapis/java-recaptchaenterprise/compare/v2.2.3...v2.3.0) (2021-11-08)
 
 
diff --git a/google-cloud-recaptchaenterprise-bom/pom.xml b/google-cloud-recaptchaenterprise-bom/pom.xml
index ba092a93..f8a9d89b 100644
--- a/google-cloud-recaptchaenterprise-bom/pom.xml
+++ b/google-cloud-recaptchaenterprise-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-recaptchaenterprise-bom</artifactId>
-  <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+  <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -52,27 +52,27 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-recaptchaenterprise</artifactId>
-        <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+        <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-recaptchaenterprise-v1</artifactId>
-        <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1:current} -->
+        <version>2.3.1</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-recaptchaenterprise-v1beta1</artifactId>
-        <version>0.38.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
+        <version>0.38.1</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-recaptchaenterprise-v1</artifactId>
-        <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1:current} -->
+        <version>2.3.1</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-recaptchaenterprise-v1beta1</artifactId>
-        <version>0.38.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1beta1:current} -->
+        <version>0.38.1</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1beta1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-recaptchaenterprise/pom.xml b/google-cloud-recaptchaenterprise/pom.xml
index 8776bba5..97761374 100644
--- a/google-cloud-recaptchaenterprise/pom.xml
+++ b/google-cloud-recaptchaenterprise/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-recaptchaenterprise</artifactId>
-  <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+  <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   <packaging>jar</packaging>
   <name>reCAPTCHA Enterprise</name>
   <url>https://github.com/googleapis/java-recaptchaenterprise</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-recaptchaenterprise-parent</artifactId>
-    <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+    <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-recaptchaenterprise</site.installationModule>
diff --git a/grpc-google-cloud-recaptchaenterprise-v1/pom.xml b/grpc-google-cloud-recaptchaenterprise-v1/pom.xml
index a38efba6..278fa86d 100644
--- a/grpc-google-cloud-recaptchaenterprise-v1/pom.xml
+++ b/grpc-google-cloud-recaptchaenterprise-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-recaptchaenterprise-v1</artifactId>
-  <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1:current} -->
+  <version>2.3.1</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1:current} -->
   <name>grpc-google-cloud-recaptchaenterprise-v1</name>
   <description>GRPC library for grpc-google-cloud-recaptchaenterprise-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-recaptchaenterprise-parent</artifactId>
-    <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+    <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-recaptchaenterprise-v1beta1/pom.xml b/grpc-google-cloud-recaptchaenterprise-v1beta1/pom.xml
index 0cf2a4b3..af839344 100644
--- a/grpc-google-cloud-recaptchaenterprise-v1beta1/pom.xml
+++ b/grpc-google-cloud-recaptchaenterprise-v1beta1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-recaptchaenterprise-v1beta1</artifactId>
-  <version>0.38.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
+  <version>0.38.1</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
   <name>grpc-google-cloud-recaptchaenterprise-v1beta1</name>
   <description>GRPC library for grpc-google-cloud-recaptchaenterprise-v1beta1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-recaptchaenterprise-parent</artifactId>
-    <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+    <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 527a2365..ed32d7b9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-recaptchaenterprise-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+  <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   <name>reCAPTCHA Enterprise Parent</name>
   <url>https://github.com/googleapis/java-recaptchaenterprise</url>
   <description>
@@ -61,27 +61,27 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-recaptchaenterprise-v1</artifactId>
-        <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1:current} -->
+        <version>2.3.1</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-recaptchaenterprise-v1beta1</artifactId>
-        <version>0.38.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1beta1:current} -->
+        <version>0.38.1</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-recaptchaenterprise-v1</artifactId>
-        <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1:current} -->
+        <version>2.3.1</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-recaptchaenterprise-v1beta1</artifactId>
-        <version>0.38.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
+        <version>0.38.1</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-recaptchaenterprise</artifactId>
-        <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+        <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-recaptchaenterprise-v1/pom.xml b/proto-google-cloud-recaptchaenterprise-v1/pom.xml
index 6e8de525..67542e5a 100644
--- a/proto-google-cloud-recaptchaenterprise-v1/pom.xml
+++ b/proto-google-cloud-recaptchaenterprise-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-recaptchaenterprise-v1</artifactId>
-  <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1:current} -->
+  <version>2.3.1</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1:current} -->
   <name>proto-google-cloud-recaptchaenterprise-v1</name>
   <description>PROTO library for proto-google-cloud-recaptchaenterprise-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-recaptchaenterprise-parent</artifactId>
-    <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+    <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-recaptchaenterprise-v1beta1/pom.xml b/proto-google-cloud-recaptchaenterprise-v1beta1/pom.xml
index 2d7f194a..559eb0f1 100644
--- a/proto-google-cloud-recaptchaenterprise-v1beta1/pom.xml
+++ b/proto-google-cloud-recaptchaenterprise-v1beta1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-recaptchaenterprise-v1beta1</artifactId>
-  <version>0.38.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1beta1:current} -->
+  <version>0.38.1</version><!-- {x-version-update:proto-google-cloud-recaptchaenterprise-v1beta1:current} -->
   <name>proto-google-cloud-recaptchaenterprise-v1beta1</name>
   <description>PROTO library for proto-google-cloud-recaptchaenterprise-v1beta1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-recaptchaenterprise-parent</artifactId>
-    <version>2.3.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
+    <version>2.3.1</version><!-- {x-version-update:google-cloud-recaptchaenterprise:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 790ca1dc..5177e9d0 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-recaptchaenterprise</artifactId>
-      <version>2.3.1-SNAPSHOT</version>
+      <version>2.3.1</version>
     </dependency>
     <!-- {x-version-update-end} -->
 
diff --git a/versions.txt b/versions.txt
index 28448e15..d0683d02 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,8 +1,8 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-recaptchaenterprise:2.3.0:2.3.1-SNAPSHOT
-grpc-google-cloud-recaptchaenterprise-v1:2.3.0:2.3.1-SNAPSHOT
-grpc-google-cloud-recaptchaenterprise-v1beta1:0.38.0:0.38.1-SNAPSHOT
-proto-google-cloud-recaptchaenterprise-v1:2.3.0:2.3.1-SNAPSHOT
-proto-google-cloud-recaptchaenterprise-v1beta1:0.38.0:0.38.1-SNAPSHOT
+google-cloud-recaptchaenterprise:2.3.1:2.3.1
+grpc-google-cloud-recaptchaenterprise-v1:2.3.1:2.3.1
+grpc-google-cloud-recaptchaenterprise-v1beta1:0.38.1:0.38.1
+proto-google-cloud-recaptchaenterprise-v1:2.3.1:2.3.1
+proto-google-cloud-recaptchaenterprise-v1beta1:0.38.1:0.38.1