diff --git a/.github/readme/synth.metadata/synth.metadata b/.github/readme/synth.metadata/synth.metadata
index f7809591..89edf2a1 100644
--- a/.github/readme/synth.metadata/synth.metadata
+++ b/.github/readme/synth.metadata/synth.metadata
@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-memcache.git",
-        "sha": "133d09c512181e6064b9b7a95e99296512f02fde"
+        "sha": "e0f2c07a336b955bec81663129d00488ca3573c3"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "2414b817065726eae0bc525346c7e874f969369d"
+        "sha": "79ab0b44a2cc7d803d07c107f9faf07729fc4012"
       }
     }
   ]
diff --git a/.repo-metadata.json b/.repo-metadata.json
index 6b37d15b..6ab036d3 100644
--- a/.repo-metadata.json
+++ b/.repo-metadata.json
@@ -4,7 +4,7 @@
   "product_documentation": "https://cloud.google.com/memorystore/",
   "api_description": "is a fully-managed in-memory data store service for Memcache.",
   "client_documentation": "https://googleapis.dev/java/google-cloud-memcache/latest/index.html",
-  "release_level": "beta",
+  "release_level": "ga",
   "transport": "grpc",
   "language": "java",
   "repo": "googleapis/java-memcache",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06a37b36..81a60d77 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.0.0](https://www.github.com/googleapis/java-memcache/compare/v0.4.0...v1.0.0) (2021-02-24)
+
+
+### Features
+
+* promote to 1.0.0 ([#314](https://www.github.com/googleapis/java-memcache/issues/314)) ([e0f2c07](https://www.github.com/googleapis/java-memcache/commit/e0f2c07a336b955bec81663129d00488ca3573c3))
+
 ## [0.4.0](https://www.github.com/googleapis/java-memcache/compare/v0.3.0...v0.4.0) (2021-02-22)
 
 
diff --git a/README.md b/README.md
index 684b071e..821f6570 100644
--- a/README.md
+++ b/README.md
@@ -8,9 +8,6 @@ Java idiomatic client for [Cloud Memcache][product-docs].
 - [Product Documentation][product-docs]
 - [Client Library Documentation][javadocs]
 
-> Note: This client is a work-in-progress, and may occasionally
-> make backwards-incompatible changes.
-
 ## Quickstart
 
 If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
@@ -20,7 +17,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>16.3.0</version>
+      <version>17.0.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
@@ -41,25 +38,25 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-memcache</artifactId>
-  <version>0.3.0</version>
+  <version>0.4.0</version>
 </dependency>
 
 ```
 
 If you are using Gradle 5.x or later, add this to your dependencies
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:16.4.0')
+implementation platform('com.google.cloud:libraries-bom:17.0.0')
 
 compile 'com.google.cloud:google-cloud-memcache'
 ```
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-memcache:0.3.0'
+compile 'com.google.cloud:google-cloud-memcache:0.4.0'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-memcache" % "0.3.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-memcache" % "0.4.0"
 ```
 
 ## Authentication
@@ -112,9 +109,6 @@ 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
 
 
@@ -154,7 +148,7 @@ Java is a registered trademark of Oracle and/or its affiliates.
 [kokoro-badge-link-4]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-memcache/java8-win.html
 [kokoro-badge-image-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-memcache/java11.svg
 [kokoro-badge-link-5]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-memcache/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.cloud/google-cloud-memcache.svg
 [maven-version-link]: https://search.maven.org/search?q=g:com.google.cloud%20AND%20a:google-cloud-memcache&core=gav
 [authentication]: https://github.com/googleapis/google-cloud-java#authentication
diff --git a/google-cloud-memcache-bom/pom.xml b/google-cloud-memcache-bom/pom.xml
index c603d14f..f65b7f04 100644
--- a/google-cloud-memcache-bom/pom.xml
+++ b/google-cloud-memcache-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-memcache-bom</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+  <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -67,27 +67,27 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-memcache-v1beta2</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1beta2:current} -->
+        <version>0.5.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1beta2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-memcache-v1beta2</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1beta2:current} -->
+        <version>0.5.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1beta2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-memcache-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1:current} -->
+        <version>1.0.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-memcache-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1:current} -->
+        <version>1.0.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-memcache</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+        <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-memcache/pom.xml b/google-cloud-memcache/pom.xml
index a498af0f..1465d936 100644
--- a/google-cloud-memcache/pom.xml
+++ b/google-cloud-memcache/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-memcache</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+  <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Memcache</name>
   <url>https://github.com/googleapis/java-memcache</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-memcache-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+    <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-memcache</site.installationModule>
diff --git a/grpc-google-cloud-memcache-v1/pom.xml b/grpc-google-cloud-memcache-v1/pom.xml
index 04489929..6b552677 100644
--- a/grpc-google-cloud-memcache-v1/pom.xml
+++ b/grpc-google-cloud-memcache-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-memcache-v1</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1:current} -->
+  <version>1.0.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1:current} -->
   <name>grpc-google-cloud-memcache-v1</name>
   <description>GRPC library for grpc-google-cloud-memcache-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-memcache-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+    <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/grpc-google-cloud-memcache-v1beta2/pom.xml b/grpc-google-cloud-memcache-v1beta2/pom.xml
index d497d25b..f92c4edc 100644
--- a/grpc-google-cloud-memcache-v1beta2/pom.xml
+++ b/grpc-google-cloud-memcache-v1beta2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-memcache-v1beta2</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1beta2:current} -->
+  <version>0.5.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1beta2:current} -->
   <name>grpc-google-cloud-memcache-v1beta2</name>
   <description>GRPC library for grpc-google-cloud-memcache-v1beta2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-memcache-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+    <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 9d8c12e3..242e86c9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-memcache-parent</artifactId>
   <packaging>pom</packaging>
-  <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+  <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   <name>Google Cloud Memcache Parent</name>
   <url>https://github.com/googleapis/java-memcache</url>
   <description>
@@ -70,27 +70,27 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-memcache-v1beta2</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1beta2:current} -->
+        <version>0.5.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1beta2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-memcache-v1beta2</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1beta2:current} -->
+        <version>0.5.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1beta2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-memcache-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1:current} -->
+        <version>1.0.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-memcache-v1</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1:current} -->
+        <version>1.0.0</version><!-- {x-version-update:grpc-google-cloud-memcache-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-memcache</artifactId>
-        <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+        <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
       </dependency>
 
       <dependency>
diff --git a/proto-google-cloud-memcache-v1/pom.xml b/proto-google-cloud-memcache-v1/pom.xml
index 5e06932b..e169c889 100644
--- a/proto-google-cloud-memcache-v1/pom.xml
+++ b/proto-google-cloud-memcache-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-memcache-v1</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1:current} -->
+  <version>1.0.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1:current} -->
   <name>proto-google-cloud-memcache-v1</name>
   <description>PROTO library for proto-google-cloud-memcache-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-memcache-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+    <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/proto-google-cloud-memcache-v1beta2/pom.xml b/proto-google-cloud-memcache-v1beta2/pom.xml
index 8ae369c6..04530ef7 100644
--- a/proto-google-cloud-memcache-v1beta2/pom.xml
+++ b/proto-google-cloud-memcache-v1beta2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-memcache-v1beta2</artifactId>
-  <version>0.4.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1beta2:current} -->
+  <version>0.5.0</version><!-- {x-version-update:proto-google-cloud-memcache-v1beta2:current} -->
   <name>proto-google-cloud-memcache-v1beta2</name>
   <description>PROTO library for proto-google-cloud-memcache-v1beta2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-memcache-parent</artifactId>
-    <version>0.4.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
+    <version>1.0.0</version><!-- {x-version-update:google-cloud-memcache:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 25a42a85..e8ef9d4a 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-memcache</artifactId>
-      <version>0.3.0</version>
+      <version>0.4.0</version>
     </dependency>
     <!-- [END memcache_install_without_bom] -->
 
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 88e76446..e863a111 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-memcache</artifactId>
-      <version>0.3.0</version>
+      <version>0.4.0</version>
     </dependency>
 
     <dependency>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 268938b0..c8e4877c 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -30,7 +30,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>libraries-bom</artifactId>
-        <version>16.3.0</version>
+        <version>17.0.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/versions.txt b/versions.txt
index 9570e739..87db7b9b 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,8 +1,8 @@
 # Format:
 # module:released-version:current-version
 
-proto-google-cloud-memcache-v1beta2:0.4.0:0.4.0
-grpc-google-cloud-memcache-v1beta2:0.4.0:0.4.0
-proto-google-cloud-memcache-v1:0.4.0:0.4.0
-grpc-google-cloud-memcache-v1:0.4.0:0.4.0
-google-cloud-memcache:0.4.0:0.4.0
+proto-google-cloud-memcache-v1beta2:0.5.0:0.5.0
+grpc-google-cloud-memcache-v1beta2:0.5.0:0.5.0
+proto-google-cloud-memcache-v1:1.0.0:1.0.0
+grpc-google-cloud-memcache-v1:1.0.0:1.0.0
+google-cloud-memcache:1.0.0:1.0.0