diff --git a/java_gen/pre-written/pom.xml b/java_gen/pre-written/pom.xml
index e516b6e..cc480df 100644
--- a/java_gen/pre-written/pom.xml
+++ b/java_gen/pre-written/pom.xml
@@ -60,6 +60,16 @@
             <artifactId>slf4j-api</artifactId>
             <version>1.7.5</version>
         </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-core</artifactId>
+            <version>1.0.13</version>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <version>1.0.13</version>
+        </dependency>
     </dependencies>
     <build>
         <plugins>