diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 97065bdf1..eadbfb686 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>3.15.3</version>
+      <version>3.15.4</version>
     </dependency>
   </dependencies>
 
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index b9d5f7c58..04b2c164f 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>3.15.3</version>
+      <version>3.15.4</version>
     </dependency>
 
     <dependency>
diff --git a/samples/snippets/pom.xml b/samples/snippets/pom.xml
index 1bc963c3a..fd3b615ff 100644
--- a/samples/snippets/pom.xml
+++ b/samples/snippets/pom.xml
@@ -72,7 +72,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java-util</artifactId>
-      <version>3.15.3</version>
+      <version>3.15.4</version>
     </dependency>
 
     <dependency>