diff --git a/package.json b/package.json
index 84e2650..80ca75a 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "firebase-functions": "^2.1.0",
     "firebase-functions-test": "^0.1.6",
     "nyc": "^13.1.0",
-    "prettier": "^1.15.3",
+    "prettier": "^1.17.0",
     "standard-version": "^5.0.0",
     "tslint": "^5.12.1",
     "tslint-config-prettier": "^1.17.0",