diff --git a/proto-google-iam-v1/build.gradle b/proto-google-iam-v1/build.gradle
index be64827e..4faf2f70 100644
--- a/proto-google-iam-v1/build.gradle
+++ b/proto-google-iam-v1/build.gradle
@@ -18,7 +18,7 @@ repositories {
 }
 
 dependencies {
-  compile 'com.google.protobuf:protobuf-java:3.21.5'
+  compile 'com.google.protobuf:protobuf-java:3.21.6'
   compile 'com.google.api:api-common:2.2.1'
   compile project(':proto-google-common-protos')
 }