diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 646b46c..4ecaa83
--- a/pom.xml
+++ b/pom.xml
@@ -16,7 +16,7 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
-        <log4j.version>2.10.0</log4j.version>
+        <log4j.version>2.13.3</log4j.version>
         <junit.jupiter.version>5.0.3</junit.jupiter.version>
         <hamcrest.version>1.3</hamcrest.version>
         <spock.version>1.1-groovy-2.4</spock.version>