diff --git a/package.json b/package.json
index 36e666e..d91b7a0 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "spike-util": "^1.2.0"
   },
   "devDependencies": {
-    "ava": "^0.20.0",
+    "ava": "^0.21.0",
     "coveralls": "^2.13.1",
     "nyc": "^11.0.3",
     "spike-core": "^2.0.1",