diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 89de345..10ce45e
--- a/pom.xml
+++ b/pom.xml
@@ -73,7 +73,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.1.3</version>
+            <version>1.2.9</version>
         </dependency>
 
         <dependency>