diff --git a/package.json b/package.json
index 7901d47..f9fe00a 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "sinon": "7.3.2",
     "source-map-support": "0.5.12",
     "ts-node": "8.3.0",
-    "tslint": "5.18.0",
+    "tslint": "5.20.1",
     "tslint-config-airbnb-base": "0.3.0",
     "tslint-config-prettier": "1.18.0",
     "tslint-plugin-prettier": "2.0.1",