diff --git a/java-bigqueryconnection/samples/install-without-bom/pom.xml b/java-bigqueryconnection/samples/install-without-bom/pom.xml
index 54bdbff2fbff..25d300e138e7 100644
--- a/java-bigqueryconnection/samples/install-without-bom/pom.xml
+++ b/java-bigqueryconnection/samples/install-without-bom/pom.xml
@@ -36,7 +36,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.0</version>
+      <version>3.21.1</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/java-bigqueryconnection/samples/snapshot/pom.xml b/java-bigqueryconnection/samples/snapshot/pom.xml
index 8fe6e611b310..e74a11ccd60a 100644
--- a/java-bigqueryconnection/samples/snapshot/pom.xml
+++ b/java-bigqueryconnection/samples/snapshot/pom.xml
@@ -35,7 +35,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.0</version>
+      <version>3.21.1</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/java-bigqueryconnection/samples/snippets/pom.xml b/java-bigqueryconnection/samples/snippets/pom.xml
index 629cd704ab4b..d45be7f6b631 100644
--- a/java-bigqueryconnection/samples/snippets/pom.xml
+++ b/java-bigqueryconnection/samples/snippets/pom.xml
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.0</version>
+      <version>3.21.1</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>