diff --git a/packages/posthtml-custom-elements-defouc/package.json b/packages/posthtml-custom-elements-defouc/package.json
index 844411b..238679b 100644
--- a/packages/posthtml-custom-elements-defouc/package.json
+++ b/packages/posthtml-custom-elements-defouc/package.json
@@ -13,7 +13,7 @@
   },
   "devDependencies": {
     "ava": "^2.4.0",
-    "mversion": "^1.10.1",
+    "mversion": "^2.0.1",
     "snazzy": "^8.0.0",
     "standard": "^14.3.1"
   },