diff --git a/java-bigquerydatatransfer/samples/install-without-bom/pom.xml b/java-bigquerydatatransfer/samples/install-without-bom/pom.xml
index 96ffcfced7b0..dc22949cb8d0 100644
--- a/java-bigquerydatatransfer/samples/install-without-bom/pom.xml
+++ b/java-bigquerydatatransfer/samples/install-without-bom/pom.xml
@@ -35,7 +35,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.4</version>
+      <version>3.21.5</version>
     </dependency>
 
     <dependency>
diff --git a/java-bigquerydatatransfer/samples/snapshot/pom.xml b/java-bigquerydatatransfer/samples/snapshot/pom.xml
index 4904f0dfd471..d8db56a436d4 100644
--- a/java-bigquerydatatransfer/samples/snapshot/pom.xml
+++ b/java-bigquerydatatransfer/samples/snapshot/pom.xml
@@ -35,7 +35,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.4</version>
+      <version>3.21.5</version>
     </dependency>
 
     <dependency>