diff --git a/package.json b/package.json
index 7b97712..d4df391 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   "license": "Apache-2.0",
   "dependencies": {},
   "devDependencies": {
-    "ava": "^0.18.1",
+    "ava": "^0.21.0",
     "coveralls": "^2.11.9",
     "eslint": "^3.5.0",
     "eslint-config-punchcard": "^1.0.1",