diff --git a/package.json b/package.json
index f559eff..1e45cab 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "object-assign": "^4.1.0"
   },
   "devDependencies": {
-    "ava": "^0.18.1",
+    "ava": "^0.20.0",
     "coveralls": "^2.11.16",
     "cssnano": "^3.10.0",
     "jsdoc-to-markdown": "^3.0.0",