diff --git a/gumtree/gen.jdt/pom.xml b/gumtree/gen.jdt/pom.xml
index aa1a4d1..45af052 100644
--- a/gumtree/gen.jdt/pom.xml
+++ b/gumtree/gen.jdt/pom.xml
@@ -33,7 +33,7 @@
 		<dependency>
 			<groupId>ch.qos.logback</groupId>
 			<artifactId>logback-core</artifactId>
-			<version>1.1.7</version>
+			<version>1.2.0</version>
 		</dependency>
 		<dependency>
 			<groupId>ch.qos.logback</groupId>