diff --git a/java-monitoring/samples/install-without-bom/pom.xml b/java-monitoring/samples/install-without-bom/pom.xml
index 1f0a70dd903f..c3d65e8cb740 100644
--- a/java-monitoring/samples/install-without-bom/pom.xml
+++ b/java-monitoring/samples/install-without-bom/pom.xml
@@ -41,7 +41,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.3</version>
+      <version>3.21.4</version>
     </dependency>
   </dependencies>
 
diff --git a/java-monitoring/samples/snapshot/pom.xml b/java-monitoring/samples/snapshot/pom.xml
index 41b89a084d28..72681c9a8411 100644
--- a/java-monitoring/samples/snapshot/pom.xml
+++ b/java-monitoring/samples/snapshot/pom.xml
@@ -39,7 +39,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.3</version>
+      <version>3.21.4</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>