diff --git a/web/flat-web/package.json b/web/flat-web/package.json
index 25489288b64..7b73e8af3e8 100644
--- a/web/flat-web/package.json
+++ b/web/flat-web/package.json
@@ -35,7 +35,6 @@
   },
   "dependencies": {
     "@ant-design/icons": "^4.6.2",
-    "@babel/runtime": "^7.16.5",
     "@loadable/component": "^5.15.0",
     "@netless/app-countdown": "^0.0.1",
     "@netless/app-geogebra": "^0.0.2",
diff --git a/yarn.lock b/yarn.lock
index 77b0976f05e..c700746d27d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1111,18 +1111,6 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
-"@babel/runtime@^7.16.5":
-  version "7.16.5"
-  resolved "https://registry.npmjs.org/@babel/runtime/-/runtime-7.16.5.tgz#7f3e34bf8bdbbadf03fbb7b1ea0d929569c9487a"
-  integrity sha512-TXWihFIS3Pyv5hzR7j6ihmeLkZfrXGxAr5UfSl8CHf+6q/wpiYDkUau0czckpYG8QmnCIuPpdLtuA9VmuGGyMA==
-  dependencies:
-    regenerator-runtime "^0.13.4"
-
-"@babel/standalone@7.13.9":
-  version "7.13.9"
-  resolved "https://registry.npmjs.org/@babel/standalone/-/standalone-7.13.9.tgz#38e78673e19f5077f4b294ad346780634e59e276"
-  integrity sha512-9ZpIl8rXXQqm5OdsQVhlBSPttwabiHGPGrl5N2bIxB9XS2NJW+1oiPFgMMNd+57C/xVwsEwD2mzv0KValOwlQA==
-
 "@babel/standalone@7.14.1":
   version "7.14.1"
   resolved "https://registry.yarnpkg.com/@babel/standalone/-/standalone-7.14.1.tgz#2c5f6908f03108583eea75bdcc94eb29e720fbac"