diff --git a/package.json b/package.json
index a3be224..0403694 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "node-zookeeper-client": "*",
     "kafka-rest": "*",
     "localtunnel": "*",
-    "log4js": "1.1.1",
+    "log4js": "6.4.0",
     "mathjs": "*",
     "microtime": "^2.1.2",
     "mocha": "*",