diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index ab71907d..f53ffff6
--- a/pom.xml
+++ b/pom.xml
@@ -140,7 +140,7 @@
             <dependency>
                 <groupId>ch.qos.logback</groupId>
                 <artifactId>logback-core</artifactId>
-                <version>1.1.2</version>
+                <version>1.2.9</version>
             </dependency>
         </dependencies>
     </dependencyManagement>