diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 46f1d1dc9..1dd6d7c63 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -75,7 +75,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.5</version>
+      <version>3.21.6</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 09ef1d04a..0268d7a90 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -61,7 +61,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.5</version>
+      <version>3.21.6</version>
     </dependency>
 
     <dependency>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 340b2a6f2..3f7cf469d 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -76,7 +76,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.5</version>
+      <version>3.21.6</version>
     </dependency>
 
     <dependency>