diff --git a/packages/ckeditor5-math/package.json b/packages/ckeditor5-math/package.json
index 7ecccbd71..fa2b80dc4 100644
--- a/packages/ckeditor5-math/package.json
+++ b/packages/ckeditor5-math/package.json
@@ -49,7 +49,6 @@
     "http-server": "^14.1.0",
     "husky": "^4.2.5",
     "lint-staged": "^10.2.6",
-    "sinon": "20.0.0",
     "stylelint": "^13.13.1",
     "stylelint-config-ckeditor5": ">=9.1.0",
     "ts-node": "^10.9.1",