diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef978fd..d6ea48a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.0.0](https://www.github.com/googleapis/java-accesscontextmanager/compare/v0.2.1...v1.0.0) (2020-08-19)
+
+
+### Features
+
+* promote to 1.0.0 ([#36](https://www.github.com/googleapis/java-accesscontextmanager/issues/36)) ([0d266f4](https://www.github.com/googleapis/java-accesscontextmanager/commit/0d266f4a37149058c7c991a72c048516cd7d242a))
+
 ### [0.2.1](https://www.github.com/googleapis/java-accesscontextmanager/compare/v0.2.0...v0.2.1) (2020-08-07)
 
 
diff --git a/README.md b/README.md
index 681c80d..7c8f945 100644
--- a/README.md
+++ b/README.md
@@ -20,9 +20,6 @@ Java 7 or above is required for using this client.
 This library follows [Semantic Versioning](http://semver.org/).
 
 
-It is currently in major version zero (``0.y.z``), which means that anything may change at any time
-and the public API should not be considered stable.
-
 
 ## Contributing
 
@@ -61,7 +58,7 @@ Java 11 | [![Kokoro CI][kokoro-badge-image-5]][kokoro-badge-link-5]
 [kokoro-badge-link-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-accesscontextmanager/java8-win.html
 [kokoro-badge-image-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-accesscontextmanager/java11.svg
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-accesscontextmanager/java11.html
-[stability-image]: https://img.shields.io/badge/stability-beta-yellow
+[stability-image]: https://img.shields.io/badge/stability-ga-green
 [maven-version-image]: https://img.shields.io/maven-central/v/com.google.api.grpc/proto-google-identity-accesscontextmanager-v1.svg
 [maven-version-link]: https://search.maven.org/search?q=g:com.google.api.grpc%20AND%20a:proto-google-identity-accesscontextmanager-v1&core=gav
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
diff --git a/pom.xml b/pom.xml
index 6df229d..df20ff0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-identity-accesscontextmanager-parent</artifactId>
   <packaging>pom</packaging>
-  <version>0.2.2-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
+  <version>1.0.0</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   <name>Google Identity Access Context Manager Parent</name>
   <url>https://github.com/googleapis/java-accesscontextmanager</url>
   <description>
diff --git a/proto-google-identity-accesscontextmanager-type/pom.xml b/proto-google-identity-accesscontextmanager-type/pom.xml
index b56da5d..4df9a7a 100644
--- a/proto-google-identity-accesscontextmanager-type/pom.xml
+++ b/proto-google-identity-accesscontextmanager-type/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-identity-accesscontextmanager-type</artifactId>
-  <version>0.2.2-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
+  <version>1.0.0</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   <name>proto-google-identity-accesscontextmanager-type</name>
   <description>PROTO library for proto-google-identity-accesscontextmanager-type</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-identity-accesscontextmanager-parent</artifactId>
-    <version>0.2.2-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
+    <version>1.0.0</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-identity-accesscontextmanager-v1/pom.xml b/proto-google-identity-accesscontextmanager-v1/pom.xml
index 0546a3d..0ae8964 100644
--- a/proto-google-identity-accesscontextmanager-v1/pom.xml
+++ b/proto-google-identity-accesscontextmanager-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-identity-accesscontextmanager-v1</artifactId>
-  <version>0.2.2-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
+  <version>1.0.0</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   <name>proto-google-identity-accesscontextmanager-v1</name>
   <description>PROTO library for proto-google-identity-accesscontextmanager-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-identity-accesscontextmanager-parent</artifactId>
-    <version>0.2.2-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
+    <version>1.0.0</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
@@ -24,7 +24,7 @@
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-identity-accesscontextmanager-type</artifactId>
-      <version>0.2.2-SNAPSHOT</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
+      <version>1.0.0</version><!-- {x-version-update:proto-google-identity-accesscontextmanager-v1:current} -->
     </dependency>
   </dependencies>
 
diff --git a/versions.txt b/versions.txt
index 27ca4d5..ca1a80a 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-identity-accesscontextmanager-v1:0.2.1:0.2.2-SNAPSHOT
+proto-google-identity-accesscontextmanager-v1:1.0.0:1.0.0