diff --git a/neo4j-extensions/transaction-event-handler/pom.xml b/neo4j-extensions/transaction-event-handler/pom.xml
old mode 100755
new mode 100644
index fd5eb43..f508f3b
--- a/neo4j-extensions/transaction-event-handler/pom.xml
+++ b/neo4j-extensions/transaction-event-handler/pom.xml
@@ -25,7 +25,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.8.2</version>
+            <version>2.21.1</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>