diff --git a/java-dialogflow-cx/samples/install-without-bom/pom.xml b/java-dialogflow-cx/samples/install-without-bom/pom.xml
index 4cef831bdd91..42e68385493b 100644
--- a/java-dialogflow-cx/samples/install-without-bom/pom.xml
+++ b/java-dialogflow-cx/samples/install-without-bom/pom.xml
@@ -46,7 +46,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.9.0</version>
+      <version>2.9.1</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/java-dialogflow-cx/samples/snapshot/pom.xml b/java-dialogflow-cx/samples/snapshot/pom.xml
index 1f4cd1de0529..8677bb362cea 100644
--- a/java-dialogflow-cx/samples/snapshot/pom.xml
+++ b/java-dialogflow-cx/samples/snapshot/pom.xml
@@ -45,7 +45,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.9.0</version>
+      <version>2.9.1</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>
diff --git a/java-dialogflow-cx/samples/snippets/pom.xml b/java-dialogflow-cx/samples/snippets/pom.xml
index 0a10c47288bf..4d11f88bbdff 100644
--- a/java-dialogflow-cx/samples/snippets/pom.xml
+++ b/java-dialogflow-cx/samples/snippets/pom.xml
@@ -33,7 +33,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.9.0</version>
+      <version>2.9.1</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud.functions</groupId>