diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 6ed43332..5f995318 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -36,7 +36,7 @@
     <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>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 4472ae3e..21e880f8 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -35,7 +35,7 @@
     <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>