diff --git a/package.json b/package.json
index 47aaeb6..1e8d70e 100644
--- a/package.json
+++ b/package.json
@@ -22,10 +22,10 @@
     "nyc": "^15.0.0",
     "sinon": "^7.5.0",
     "sinon-chai": "^3.3.0",
-    "stylelint-order": "^4.0.0",
     "stylelint": "^13.5.0",
     "stylelint-config-standard": "^20.0.0",
-    "web-ext": "^2.9.3",
+    "stylelint-order": "^4.0.0",
+    "web-ext": "^5.4.1",
     "webextensions-jsdom": "^1.2.1"
   },
   "homepage": "https://github.com/mozilla/multi-account-containers#readme",