diff --git a/java-interview-tomcat/pom.xml b/java-interview-tomcat/pom.xml
old mode 100755
new mode 100644
index 5b5a3b2..8e8c7f7
--- a/java-interview-tomcat/pom.xml
+++ b/java-interview-tomcat/pom.xml
@@ -13,7 +13,7 @@
         <tomcat.version>8.5.42</tomcat.version>
         <spring-version>4.3.24.RELEASE</spring-version>
         <slf4j.version>1.7.21</slf4j.version>
-        <logback.version>1.1.7</logback.version>
+        <logback.version>1.2.0</logback.version>
     </properties>
 
     <dependencies>