diff --git a/google-api-grpc/pom.xml b/google-api-grpc/pom.xml
index 4770f6681ea5..3baf2b90d274 100644
--- a/google-api-grpc/pom.xml
+++ b/google-api-grpc/pom.xml
@@ -112,7 +112,7 @@
       <dependency>
         <groupId>com.google.protobuf</groupId>
         <artifactId>protobuf-bom</artifactId>
-        <version>3.10.0</version>
+        <version>3.11.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/google-cloud-clients/pom.xml b/google-cloud-clients/pom.xml
index f95e498eded8..12f64b6f9212 100644
--- a/google-cloud-clients/pom.xml
+++ b/google-cloud-clients/pom.xml
@@ -163,7 +163,7 @@
     <guava.version>28.1-android</guava.version>
     <http-client-bom.version>1.33.0</http-client-bom.version>
     <oauth-client.version>1.30.4</oauth-client.version>
-    <protobuf.version>3.10.0</protobuf.version>
+    <protobuf.version>3.11.0</protobuf.version>
     <!-- make sure to keep opencensus version in sync with grpc -->
     <opencensus.version>0.24.0</opencensus.version>
     <!-- test dependency versions -->