diff --git a/google-cloud-datastore/pom.xml b/google-cloud-datastore/pom.xml
index 2d54a7a37..b8acd7913 100644
--- a/google-cloud-datastore/pom.xml
+++ b/google-cloud-datastore/pom.xml
@@ -159,7 +159,7 @@
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava-testlib</artifactId>
-      <version>33.3.1-jre</version>
+      <version>33.4.0-jre</version>
       <scope>test</scope>
     </dependency>
     <!-- Need testing utility classes for generated gRPC clients tests -->