diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18161502..9cd26080 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [0.18.0](https://www.github.com/googleapis/java-gameservices/compare/v0.17.0...v0.18.0) (2019-11-18)
+
+
+### ⚠ BREAKING CHANGES
+
+* add gke_cluster_reference; buffer_size_percentage is now an int (#18)
+
+### Features
+
+* add gke_cluster_reference; buffer_size_percentage is now an int ([#18](https://www.github.com/googleapis/java-gameservices/issues/18)) ([4414980](https://www.github.com/googleapis/java-gameservices/commit/4414980b948fa37203f05d03e95f2b1c885f783b))
+
 ## [0.17.0](https://www.github.com/googleapis/java-gameservices/compare/0.16.0...v0.17.0) (2019-10-28)
 
 
diff --git a/README.md b/README.md
index 1bf9b780..55e77486 100644
--- a/README.md
+++ b/README.md
@@ -41,16 +41,16 @@ If you are using Maven without a BOM, add this to your dependencies.
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-gameservices</artifactId>
-  <version>0.17.0</version>
+  <version>0.18.0</version>
 </dependency>
 ```
 If you are using Gradle, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-gameservices:0.17.0'
+compile 'com.google.cloud:google-cloud-gameservices:0.18.0'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-gameservices" % "0.17.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-gameservices" % "0.18.0"
 ```
 [//]: # ({x-version-update-end})
 
diff --git a/google-cloud-gameservices-bom/pom.xml b/google-cloud-gameservices-bom/pom.xml
index 7a8306f0..c28eaece 100644
--- a/google-cloud-gameservices-bom/pom.xml
+++ b/google-cloud-gameservices-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-gameservices-bom</artifactId>
-  <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+  <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -64,17 +64,17 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-gameservices-v1alpha</artifactId>
-        <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-gameservices-v1alpha:current} -->
+        <version>0.18.0</version><!-- {x-version-update:proto-google-cloud-gameservices-v1alpha:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-gameservices</artifactId>
-        <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+        <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-gameservices-v1alpha</artifactId>
-        <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-gameservices-v1alpha:current} -->
+        <version>0.18.0</version><!-- {x-version-update:grpc-google-cloud-gameservices-v1alpha:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-gameservices/pom.xml b/google-cloud-gameservices/pom.xml
index 2ff1a142..d53866c7 100644
--- a/google-cloud-gameservices/pom.xml
+++ b/google-cloud-gameservices/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-gameservices</artifactId>
-  <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+  <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Game Services</name>
   <url>https://github.com/googleapis/java-gameservices</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-gameservices-parent</artifactId>
-    <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+    <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-gameservices</site.installationModule>
diff --git a/grpc-google-cloud-gameservices-v1alpha/pom.xml b/grpc-google-cloud-gameservices-v1alpha/pom.xml
index 0d040d2f..cab8cb1a 100644
--- a/grpc-google-cloud-gameservices-v1alpha/pom.xml
+++ b/grpc-google-cloud-gameservices-v1alpha/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-gameservices-v1alpha</artifactId>
-  <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-gameservices-v1alpha:current} -->
+  <version>0.18.0</version><!-- {x-version-update:grpc-google-cloud-gameservices-v1alpha:current} -->
   <name>grpc-google-cloud-gameservices-v1alpha</name>
   <description>GRPC library for grpc-google-cloud-gameservices-v1alpha</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-gameservices-parent</artifactId>
-    <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+    <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 671220d8..ef8ca320 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-gameservices-parent</artifactId>
   <packaging>pom</packaging>
-  <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+  <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
   <name>Google Cloud Game Services Parent</name>
   <url>https://github.com/googleapis/java-gameservices</url>
   <description>
@@ -81,17 +81,17 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-gameservices-v1alpha</artifactId>
-        <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-gameservices-v1alpha:current} -->
+        <version>0.18.0</version><!-- {x-version-update:proto-google-cloud-gameservices-v1alpha:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-gameservices-v1alpha</artifactId>
-        <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-gameservices-v1alpha:current} -->
+        <version>0.18.0</version><!-- {x-version-update:grpc-google-cloud-gameservices-v1alpha:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-gameservices</artifactId>
-        <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+        <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-gameservices-v1alpha/pom.xml b/proto-google-cloud-gameservices-v1alpha/pom.xml
index 9bef8beb..b67ebd52 100644
--- a/proto-google-cloud-gameservices-v1alpha/pom.xml
+++ b/proto-google-cloud-gameservices-v1alpha/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-gameservices-v1alpha</artifactId>
-  <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-gameservices-v1alpha:current} -->
+  <version>0.18.0</version><!-- {x-version-update:proto-google-cloud-gameservices-v1alpha:current} -->
   <name>proto-google-cloud-gameservices-v1alpha</name>
   <description>PROTO library for proto-google-cloud-gameservices-v1alpha</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-gameservices-parent</artifactId>
-    <version>0.17.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-gameservices:current} -->
+    <version>0.18.0</version><!-- {x-version-update:google-cloud-gameservices:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/versions.txt b/versions.txt
index 4fb3df97..fed7bcd9 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-cloud-gameservices-v1alpha:0.17.0:0.17.1-SNAPSHOT
-grpc-google-cloud-gameservices-v1alpha:0.17.0:0.17.1-SNAPSHOT
-google-cloud-gameservices:0.17.0:0.17.1-SNAPSHOT
\ No newline at end of file
+proto-google-cloud-gameservices-v1alpha:0.18.0:0.18.0
+grpc-google-cloud-gameservices-v1alpha:0.18.0:0.18.0
+google-cloud-gameservices:0.18.0:0.18.0
\ No newline at end of file