diff --git a/java-datacatalog/samples/install-without-bom/pom.xml b/java-datacatalog/samples/install-without-bom/pom.xml
index 513d8ffc8e0d..5b477e83c1e9 100644
--- a/java-datacatalog/samples/install-without-bom/pom.xml
+++ b/java-datacatalog/samples/install-without-bom/pom.xml
@@ -36,7 +36,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.5</version>
+      <version>3.21.6</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/java-datacatalog/samples/snapshot/pom.xml b/java-datacatalog/samples/snapshot/pom.xml
index d6cee229b6cd..2c543d9a2e1f 100644
--- a/java-datacatalog/samples/snapshot/pom.xml
+++ b/java-datacatalog/samples/snapshot/pom.xml
@@ -34,7 +34,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.5</version>
+      <version>3.21.6</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/java-datacatalog/samples/snippets/pom.xml b/java-datacatalog/samples/snippets/pom.xml
index 00cd0c314cbf..ee6e30c87e3e 100644
--- a/java-datacatalog/samples/snippets/pom.xml
+++ b/java-datacatalog/samples/snippets/pom.xml
@@ -47,7 +47,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.21.5</version>
+      <version>3.21.6</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>