diff --git a/packages/posthtml-custom-elements-defouc/package.json b/packages/posthtml-custom-elements-defouc/package.json
index 844411b..24d1a31 100644
--- a/packages/posthtml-custom-elements-defouc/package.json
+++ b/packages/posthtml-custom-elements-defouc/package.json
@@ -14,7 +14,7 @@
   "devDependencies": {
     "ava": "^2.4.0",
     "mversion": "^1.10.1",
-    "snazzy": "^8.0.0",
+    "snazzy": "^9.0.0",
     "standard": "^14.3.1"
   },
   "engines": {