diff --git a/gumtree/gen.jdt/pom.xml b/gumtree/gen.jdt/pom.xml
index 3d6b2b0..0dbc507 100644
--- a/gumtree/gen.jdt/pom.xml
+++ b/gumtree/gen.jdt/pom.xml
@@ -29,7 +29,7 @@
 		<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>