diff --git a/java-iam/pom.xml b/java-iam/pom.xml
index 3dd9d7f4babc..3386af530cb9 100644
--- a/java-iam/pom.xml
+++ b/java-iam/pom.xml
@@ -70,7 +70,7 @@
       <dependency>
         <groupId>com.google.protobuf</groupId>
         <artifactId>protobuf-bom</artifactId>
-        <version>3.21.7</version>
+        <version>3.21.8</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>