diff --git a/CHANGELOG.md b/CHANGELOG.md
index 405eaf9e..5c296076 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.6.4](https://github.com/googleapis/java-kms/compare/v2.6.3...v2.6.4) (2022-08-18)
+
+
+### Dependencies
+
+* update dependency com.google.protobuf:protobuf-java-util to v3.21.5 ([#834](https://github.com/googleapis/java-kms/issues/834)) ([9745b38](https://github.com/googleapis/java-kms/commit/9745b38c7c45f98c9ed72980eb0626e1c78e0fc0))
+
 ## [2.6.3](https://github.com/googleapis/java-kms/compare/v2.6.2...v2.6.3) (2022-08-11)
 
 
diff --git a/README.md b/README.md
index 6d09739a..b708e5df 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ 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>26.0.0</version>
+      <version>26.1.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
@@ -42,7 +42,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-kms</artifactId>
-  <version>2.6.0</version>
+  <version>2.6.2</version>
 </dependency>
 
 ```
@@ -50,20 +50,20 @@ If you are using Maven without BOM, add this to your dependencies:
 If you are using Gradle 5.x or later, add this to your dependencies:
 
 ```Groovy
-implementation platform('com.google.cloud:libraries-bom:26.0.0')
+implementation platform('com.google.cloud:libraries-bom:26.1.0')
 
 implementation 'com.google.cloud:google-cloud-kms'
 ```
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-kms:2.6.2'
+implementation 'com.google.cloud:google-cloud-kms:2.6.3'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-kms" % "2.6.2"
+libraryDependencies += "com.google.cloud" % "google-cloud-kms" % "2.6.3"
 ```
 
 ## Authentication
diff --git a/google-cloud-kms-bom/pom.xml b/google-cloud-kms-bom/pom.xml
index 6ee73644..b9c01290 100644
--- a/google-cloud-kms-bom/pom.xml
+++ b/google-cloud-kms-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-kms-bom</artifactId>
-  <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+  <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -52,17 +52,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-kms</artifactId>
-        <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+        <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-kms-v1</artifactId>
-        <version>0.97.3</version><!-- {x-version-update:grpc-google-cloud-kms-v1:current} -->
+        <version>0.97.4</version><!-- {x-version-update:grpc-google-cloud-kms-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-kms-v1</artifactId>
-        <version>0.97.3</version><!-- {x-version-update:proto-google-cloud-kms-v1:current} -->
+        <version>0.97.4</version><!-- {x-version-update:proto-google-cloud-kms-v1:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-kms/pom.xml b/google-cloud-kms/pom.xml
index 0f463d86..f92a758d 100644
--- a/google-cloud-kms/pom.xml
+++ b/google-cloud-kms/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-kms</artifactId>
-  <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+  <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud KMS</name>
   <url>https://github.com/googleapis/java-kms</url>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-kms-parent</artifactId>
-    <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+    <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-kms</site.installationModule>
diff --git a/grpc-google-cloud-kms-v1/pom.xml b/grpc-google-cloud-kms-v1/pom.xml
index 680b06db..8027fd28 100644
--- a/grpc-google-cloud-kms-v1/pom.xml
+++ b/grpc-google-cloud-kms-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-cloud-kms-v1</artifactId>
-  <version>0.97.3</version><!-- {x-version-update:grpc-google-cloud-kms-v1:current} -->
+  <version>0.97.4</version><!-- {x-version-update:grpc-google-cloud-kms-v1:current} -->
   <name>grpc-google-cloud-kms-v1</name>
   <description>GRPC library for grpc-google-cloud-kms-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-kms-parent</artifactId>
-    <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+    <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 095dfcf8..fd6c97aa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-kms-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+  <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
   <name>Google Cloud KMS Parent</name>
   <url>https://github.com/googleapis/java-kms</url>
   <description>
@@ -61,22 +61,22 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-kms-v1</artifactId>
-        <version>0.97.3</version><!-- {x-version-update:proto-google-cloud-kms-v1:current} -->
+        <version>0.97.4</version><!-- {x-version-update:proto-google-cloud-kms-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-kms-v1</artifactId>
-        <version>0.97.3</version><!-- {x-version-update:grpc-google-cloud-kms-v1:current} -->
+        <version>0.97.4</version><!-- {x-version-update:grpc-google-cloud-kms-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-kms</artifactId>
-        <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+        <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-kms-bom</artifactId>
-        <version>2.6.0</version><!-- {x-version-update:google-cloud-kms-bom:current} -->
+        <version>2.6.3</version><!-- {x-version-update:google-cloud-kms-bom:current} -->
       </dependency>
 
       <dependency>
@@ -125,7 +125,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-project-info-reports-plugin</artifactId>
-        <version>3.4.0</version>
+        <version>3.4.1</version>
         <reportSets>
           <reportSet>
             <reports>
@@ -152,7 +152,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.4.0</version>
+        <version>3.4.1</version>
         <reportSets>
           <reportSet>
             <id>html</id>
diff --git a/proto-google-cloud-kms-v1/pom.xml b/proto-google-cloud-kms-v1/pom.xml
index bfd4fa22..860097a0 100644
--- a/proto-google-cloud-kms-v1/pom.xml
+++ b/proto-google-cloud-kms-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-cloud-kms-v1</artifactId>
-  <version>0.97.3</version><!-- {x-version-update:proto-google-cloud-kms-v1:current} -->
+  <version>0.97.4</version><!-- {x-version-update:proto-google-cloud-kms-v1:current} -->
   <name>proto-google-cloud-kms-v1</name>
   <description>PROTO library for proto-google-cloud-kms-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-kms-parent</artifactId>
-    <version>2.6.3</version><!-- {x-version-update:google-cloud-kms:current} -->
+    <version>2.6.4</version><!-- {x-version-update:google-cloud-kms:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index c5b738cf..7acd4c41 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -29,14 +29,14 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-kms</artifactId>
-      <version>2.6.0</version>
+      <version>2.6.2</version>
     </dependency>
     <!-- [END cloudkms_install_without_bom] -->
 
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.4</version>
+      <version>3.21.5</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index de4cebf0..3a08ba84 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -28,14 +28,14 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-kms</artifactId>
-      <version>2.6.3</version>
+      <version>2.6.4</version>
     </dependency>
     <!-- {x-version-update-end} -->
 
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.4</version>
+      <version>3.21.5</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 354bf493..1be6a622 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>26.0.0</version>
+        <version>26.1.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/versions.txt b/versions.txt
index 7ed406db..da212eab 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,6 +1,6 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-kms:2.6.3:2.6.3
-grpc-google-cloud-kms-v1:0.97.3:0.97.3
-proto-google-cloud-kms-v1:0.97.3:0.97.3
+google-cloud-kms:2.6.4:2.6.4
+grpc-google-cloud-kms-v1:0.97.4:0.97.4
+proto-google-cloud-kms-v1:0.97.4:0.97.4