diff --git a/packages/posthtml-custom-elements-defouc/package.json b/packages/posthtml-custom-elements-defouc/package.json
index 844411b..9b4d3e2 100644
--- a/packages/posthtml-custom-elements-defouc/package.json
+++ b/packages/posthtml-custom-elements-defouc/package.json
@@ -12,7 +12,7 @@
     "posthtml-attrs-parser": "^0.1.1"
   },
   "devDependencies": {
-    "ava": "^2.4.0",
+    "ava": "^3.15.0",
     "mversion": "^1.10.1",
     "snazzy": "^8.0.0",
     "standard": "^14.3.1"