diff --git a/java-iam/proto-google-iam-v1/build.gradle b/java-iam/proto-google-iam-v1/build.gradle
index 69e52828a7..ef52ed8796 100644
--- a/java-iam/proto-google-iam-v1/build.gradle
+++ b/java-iam/proto-google-iam-v1/build.gradle
@@ -18,7 +18,7 @@ repositories {
 }
 
 dependencies {
-  compile 'com.google.protobuf:protobuf-java:3.21.8'
+  compile 'com.google.protobuf:protobuf-java:3.21.9'
   compile 'com.google.api:api-common:2.2.2'
   compile project(':proto-google-common-protos')
 }