diff --git a/samples/install-without-bom/pom.xml b/samples/install-without-bom/pom.xml
index 951eb09e..41bb6d18 100644
--- a/samples/install-without-bom/pom.xml
+++ b/samples/install-without-bom/pom.xml
@@ -36,7 +36,7 @@
com.google.protobuf
protobuf-java-util
- 3.15.2
+ 3.15.4
junit
diff --git a/samples/snapshot/pom.xml b/samples/snapshot/pom.xml
index 6a78e314..1482bab5 100644
--- a/samples/snapshot/pom.xml
+++ b/samples/snapshot/pom.xml
@@ -35,7 +35,7 @@
com.google.protobuf
protobuf-java-util
- 3.15.2
+ 3.15.4
junit