diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fb50ce9f7..b08a4da295 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,32 @@ refer to the [commit
 history](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commits/main)
 on GitHub.
 
+## [5.6.0](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/compare/v5.5.1...v5.6.0) (2024-08-28)
+
+
+### Features
+
+* add properties to customize universeDomain and endpoint in KMS module ([#3104](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3104)) ([1de0e36](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/1de0e36f1264864c6616fe3a499e615089da950f))
+
+
+### Bug Fixes
+
+* CastClassException in PubSubDeadLetterTopicSampleAppIntegrationTest [#3139](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3139) ([#3145](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3145)) ([ae3626a](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/ae3626a34c350fc504f8065f2093cfb09865703f))
+* noSuchMethodError in BigQuerySampleApplicationIntegrationTests ([#3146](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3146)) ([a891693](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/a891693d59c481af23dc2ca44e6b16f200b197fb))
+* update compatibility statement for doc ([#3136](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3136)) ([f3591b8](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/f3591b8f72d711392d8ae927a282c51f7611f93f))
+
+
+### Dependencies
+
+* bump com.google.cloud:alloydb-jdbc-connector from 1.1.4 to 1.1.5 ([#3129](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3129)) ([fb375f6](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/fb375f64de411b971b997dec27960e49011df865))
+* bump io.opentelemetry:opentelemetry-api from 1.32.0 to 1.41.0 ([#3153](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3153)) ([0ef3aa6](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/0ef3aa69a04351d214bdc0567ca5f270aa1bbf1d))
+
+
+### Documentation
+
+* adjust spring-cloud-gcp-core documentation auth guides. ([#3144](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3144)) ([20b3393](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/20b339380d4a069795f1656e9f68501c3dbef3dd))
+* Update README post releases ([#3137](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/3137)) ([7733fe5](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commit/7733fe54158ea14af5e27952de0d3efcd0a79004))
+
 ## [5.5.1](https://github.com/GoogleCloudPlatform/spring-cloud-gcp/compare/v5.5.0...v5.5.1) (2024-08-15)
 
 
diff --git a/README.adoc b/README.adoc
index e357a2375f..dd76bd0f51 100644
--- a/README.adoc
+++ b/README.adoc
@@ -11,7 +11,7 @@ You can check our project website https://spring.io/projects/spring-cloud-gcp[he
 For a deep dive into the project, refer to the Spring Framework on Google Cloud Reference documentation or Javadocs:
 
 // {x-version-update-start:spring-cloud-gcp:released}
-* link:https://googlecloudplatform.github.io/spring-cloud-gcp/5.5.1/reference/html/index.html[Spring Framework on Google Cloud 5.5.1 (Latest)] - https://googleapis.dev/java/spring-cloud-gcp/5.5.1/index.html[Javadocs 5.5.1]
+* link:https://googlecloudplatform.github.io/spring-cloud-gcp/5.6.0/reference/html/index.html[Spring Framework on Google Cloud 5.5.1 (Latest)] - https://googleapis.dev/java/spring-cloud-gcp/5.5.1/index.html[Javadocs 5.5.1]
 // {x-version-update-end}
 * link:https://googlecloudplatform.github.io/spring-cloud-gcp/4.10.7/reference/html/index.html[Spring Framework on Google Cloud 4.10.7] - https://googleapis.dev/java/spring-cloud-gcp/4.10.7/index.html[Javadocs 4.10.7]
 * link:https://googlecloudplatform.github.io/spring-cloud-gcp/3.8.7/reference/html/index.html[Spring Framework on Google Cloud 3.8.7] - https://googleapis.dev/java/spring-cloud-gcp/3.8.7/index.html[Javadocs 3.8.7]
@@ -104,7 +104,7 @@ This will allow you to not specify versions for any of the Maven dependencies an
         <dependency>
             <groupId>com.google.cloud</groupId>
             <artifactId>spring-cloud-gcp-dependencies</artifactId>
-            <version>5.5.1</version>
+            <version>5.6.0</version>
             <type>pom</type>
             <scope>import</scope>
         </dependency>
diff --git a/spring-cloud-generator/scripts/resources/googleapis_modification_string.txt b/spring-cloud-generator/scripts/resources/googleapis_modification_string.txt
index 40a8fed3ad..4313ccf73e 100644
--- a/spring-cloud-generator/scripts/resources/googleapis_modification_string.txt
+++ b/spring-cloud-generator/scripts/resources/googleapis_modification_string.txt
@@ -1,4 +1,4 @@
-_spring_cloud_generator_version = "5.5.2-SNAPSHOT" # {x-version-update:spring-cloud-gcp:current}
+_spring_cloud_generator_version = "5.6.0" # {x-version-update:spring-cloud-gcp:current}
 
 maven_install(
     artifacts = [
diff --git a/spring-cloud-previews/google-cloud-workstations-spring-starter/pom.xml b/spring-cloud-previews/google-cloud-workstations-spring-starter/pom.xml
index 3b33839e23..e302f77384 100644
--- a/spring-cloud-previews/google-cloud-workstations-spring-starter/pom.xml
+++ b/spring-cloud-previews/google-cloud-workstations-spring-starter/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>spring-cloud-gcp-starters</artifactId>
-    <version>5.5.2-SNAPSHOT</version><!-- {x-version-update:spring-cloud-gcp:current} -->
+    <version>5.6.0</version><!-- {x-version-update:spring-cloud-gcp:current} -->
     <relativePath>../../spring-cloud-gcp-starters/pom.xml</relativePath>
   </parent>
   <artifactId>google-cloud-workstations-spring-starter</artifactId>
diff --git a/spring-cloud-previews/google-iam-admin-spring-starter/pom.xml b/spring-cloud-previews/google-iam-admin-spring-starter/pom.xml
index 85c312b229..de8b25e7df 100644
--- a/spring-cloud-previews/google-iam-admin-spring-starter/pom.xml
+++ b/spring-cloud-previews/google-iam-admin-spring-starter/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>spring-cloud-gcp-starters</artifactId>
-    <version>5.5.2-SNAPSHOT</version><!-- {x-version-update:spring-cloud-gcp:current} -->
+    <version>5.6.0</version><!-- {x-version-update:spring-cloud-gcp:current} -->
     <relativePath>../../spring-cloud-gcp-starters/pom.xml</relativePath>
   </parent>
   <artifactId>google-iam-admin-spring-starter</artifactId>
diff --git a/spring-cloud-previews/google-iam-policy-spring-starter/pom.xml b/spring-cloud-previews/google-iam-policy-spring-starter/pom.xml
index 48faf803aa..dcf9b62b6d 100644
--- a/spring-cloud-previews/google-iam-policy-spring-starter/pom.xml
+++ b/spring-cloud-previews/google-iam-policy-spring-starter/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>spring-cloud-gcp-starters</artifactId>
-    <version>5.5.2-SNAPSHOT</version><!-- {x-version-update:spring-cloud-gcp:current} -->
+    <version>5.6.0</version><!-- {x-version-update:spring-cloud-gcp:current} -->
     <relativePath>../../spring-cloud-gcp-starters/pom.xml</relativePath>
   </parent>
   <artifactId>google-iam-policy-spring-starter</artifactId>
diff --git a/spring-cloud-previews/google-identity-accesscontextmanager-spring-starter/pom.xml b/spring-cloud-previews/google-identity-accesscontextmanager-spring-starter/pom.xml
index 7207df8a63..e7eedd870c 100644
--- a/spring-cloud-previews/google-identity-accesscontextmanager-spring-starter/pom.xml
+++ b/spring-cloud-previews/google-identity-accesscontextmanager-spring-starter/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>spring-cloud-gcp-starters</artifactId>
-    <version>5.5.2-SNAPSHOT</version><!-- {x-version-update:spring-cloud-gcp:current} -->
+    <version>5.6.0</version><!-- {x-version-update:spring-cloud-gcp:current} -->
     <relativePath>../../spring-cloud-gcp-starters/pom.xml</relativePath>
   </parent>
   <artifactId>google-identity-accesscontextmanager-spring-starter</artifactId>
diff --git a/spring-cloud-previews/pom.xml b/spring-cloud-previews/pom.xml
index 482bb5b9c9..41a443530b 100644
--- a/spring-cloud-previews/pom.xml
+++ b/spring-cloud-previews/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <artifactId>spring-cloud-gcp</artifactId>
     <groupId>com.google.cloud</groupId>
-    <version>5.5.2-SNAPSHOT</version><!-- {x-version-update:spring-cloud-gcp:current} -->
+    <version>5.6.0</version><!-- {x-version-update:spring-cloud-gcp:current} -->
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
diff --git a/spring-cloud-spanner-spring-data-r2dbc/pom.xml b/spring-cloud-spanner-spring-data-r2dbc/pom.xml
index f9e4fe9001..ede4bd03ba 100644
--- a/spring-cloud-spanner-spring-data-r2dbc/pom.xml
+++ b/spring-cloud-spanner-spring-data-r2dbc/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <artifactId>spring-cloud-gcp</artifactId>
     <groupId>com.google.cloud</groupId>
-    <version>5.5.2-SNAPSHOT</version><!-- {x-version-update:spring-cloud-gcp:current} -->
+    <version>5.6.0</version><!-- {x-version-update:spring-cloud-gcp:current} -->
   </parent>
   <modelVersion>4.0.0</modelVersion>