diff --git a/dialogflow-cx/snippets/pom.xml b/dialogflow-cx/snippets/pom.xml
index a1f8bc350ed..4c4626d39b6 100644
--- a/dialogflow-cx/snippets/pom.xml
+++ b/dialogflow-cx/snippets/pom.xml
@@ -55,7 +55,7 @@
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>3.12.4</version>
+      <version>4.0.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>