diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f91d4dfda..0a13be5d9e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [2.8.21](https://github.com/googleapis/java-core/compare/v2.8.20...v2.8.21) (2022-10-10)
+
+
+### Dependencies
+
+* Update dependency com.google.api.grpc:proto-google-iam-v1 to v1.6.2 ([#971](https://github.com/googleapis/java-core/issues/971)) ([5d778fc](https://github.com/googleapis/java-core/commit/5d778fc0d78e67cbcc4eb061da3b66dd3cab440e))
+* Update dependency com.google.api.grpc:proto-google-iam-v1 to v1.6.3 ([#974](https://github.com/googleapis/java-core/issues/974)) ([1b7fcb9](https://github.com/googleapis/java-core/commit/1b7fcb978da55f8d30cf66941bc8208853fef116))
+
 ## [2.8.20](https://github.com/googleapis/java-core/compare/v2.8.19...v2.8.20) (2022-10-02)
 
 
diff --git a/google-cloud-core-bom/pom.xml b/google-cloud-core-bom/pom.xml
index 78208dcb25..8cd73e542e 100644
--- a/google-cloud-core-bom/pom.xml
+++ b/google-cloud-core-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-core-bom</artifactId>
-  <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+  <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   <packaging>pom</packaging>
   <parent>
     <groupId>com.google.cloud</groupId>
@@ -63,17 +63,17 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-core</artifactId>
-        <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+        <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-core-grpc</artifactId>
-        <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+        <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-core-http</artifactId>
-        <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+        <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
       </dependency>
     </dependencies>
   </dependencyManagement>
diff --git a/google-cloud-core-grpc/pom.xml b/google-cloud-core-grpc/pom.xml
index 31156bb942..ee33945fc5 100644
--- a/google-cloud-core-grpc/pom.xml
+++ b/google-cloud-core-grpc/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-core-grpc</artifactId>
-  <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+  <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Core gRPC</name>
   <url>https://github.com/googleapis/java-core</url>
@@ -13,7 +13,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-core-parent</artifactId>
-    <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+    <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-core-grpc</site.installationModule>
diff --git a/google-cloud-core-http/pom.xml b/google-cloud-core-http/pom.xml
index 7c548cc7cd..d4c83ac47e 100644
--- a/google-cloud-core-http/pom.xml
+++ b/google-cloud-core-http/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-core-http</artifactId>
-  <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+  <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Core HTTP</name>
   <url>https://github.com/googleapis/java-core</url>
@@ -13,7 +13,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-core-parent</artifactId>
-    <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+    <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-core-http</site.installationModule>
diff --git a/google-cloud-core/pom.xml b/google-cloud-core/pom.xml
index cc8f5c991b..d5992e63e0 100644
--- a/google-cloud-core/pom.xml
+++ b/google-cloud-core/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-core</artifactId>
-  <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+  <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Core</name>
   <url>https://github.com/googleapis/java-core</url>
@@ -13,7 +13,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-core-parent</artifactId>
-    <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+    <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   </parent>
   <properties>
     <site.installationModule>google-cloud-core</site.installationModule>
diff --git a/pom.xml b/pom.xml
index 9d82451476..4b93da73eb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-core-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.8.20</version><!-- {x-version-update:google-cloud-core:current} -->
+  <version>2.8.21</version><!-- {x-version-update:google-cloud-core:current} -->
   <name>Google Cloud Core Parent</name>
   <url>https://github.com/googleapis/java-core</url>
   <description>
@@ -154,7 +154,7 @@
     <gax.version>2.19.2</gax.version>
     <google.api-common.version>2.2.1</google.api-common.version>
     <google.common-protos.version>2.9.6</google.common-protos.version>
-    <google.iam.version>1.6.1</google.iam.version>
+    <google.iam.version>1.6.3</google.iam.version>
     <google.auth.version>1.11.0</google.auth.version>
     <google.api.version>2.0.0</google.api.version>
     <google.http.version>1.42.2</google.http.version>
diff --git a/versions.txt b/versions.txt
index 7efbcffa2e..58659c30cb 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-core:2.8.20:2.8.20
+google-cloud-core:2.8.21:2.8.21