diff --git a/package.json b/package.json
index 0708892..92229ce 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "spread-args": "0.2.0"
   },
   "devDependencies": {
-    "ava": "^0.20.0",
+    "ava": "^0.21.0",
     "coveralls": "^2.11.9",
     "eslint": "^3.1.1",
     "eslint-config-pedant": "^0.9.0",