diff --git a/java_gen/pre-written/pom.xml b/java_gen/pre-written/pom.xml
index ea9a43f..17f14ab 100644
--- a/java_gen/pre-written/pom.xml
+++ b/java_gen/pre-written/pom.xml
@@ -53,7 +53,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>14.0.1</version>
+            <version>15.0</version>
         </dependency>
     </dependencies>
     <build>