diff --git a/package.json b/package.json
index 73a71e3..dc68daf 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "@types/jest": "^20.0.5",
     "del-cli": "^1.1.0",
     "jest": "^20.0.4",
-    "ts-jest": "^20.0.7",
+    "ts-jest": "^20.0.9",
     "tslint": "^5.5.0",
     "tslint-config-airbnb": "^5.2.1",
     "tsutils": "^2.8.0",