diff --git a/web/package-lock.json b/web/package-lock.json
index 1beeb89d2..ad9b919ef 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -41,7 +41,7 @@
                 "chart.js": "^3.5.1",
                 "chartjs-adapter-moment": "^1.0.0",
                 "codemirror": "^5.63.1",
-                "construct-style-sheets-polyfill": "^3.0.3",
+                "construct-style-sheets-polyfill": "^2.4.16",
                 "eslint": "^7.32.0",
                 "eslint-config-google": "^0.14.0",
                 "eslint-plugin-custom-elements": "0.0.2",
@@ -3684,12 +3684,9 @@
             "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
         },
         "node_modules/construct-style-sheets-polyfill": {
-            "version": "3.0.3",
-            "resolved": "https://registry.npmjs.org/construct-style-sheets-polyfill/-/construct-style-sheets-polyfill-3.0.3.tgz",
-            "integrity": "sha512-z5sn55s4Avgpfj5uEKXP50DIawJoQ9iYtojSXrbxYL8W1njzZqW3/Yzsgmqgb2sV0NVvhn1cH5wk313DeQLzbA==",
-            "engines": {
-                "npm": ">=7"
-            }
+            "version": "2.4.17",
+            "resolved": "https://registry.npmjs.org/construct-style-sheets-polyfill/-/construct-style-sheets-polyfill-2.4.17.tgz",
+            "integrity": "sha512-rKtZGWWAVFE6HgdBuuui1emic/t8aAKQbePQ7Je6ird8nZYSd3mqqBX9IvFn2CMtnbh7mQTk/vxc9mfaLl7cGQ=="
         },
         "node_modules/convert-source-map": {
             "version": "1.8.0",
@@ -11299,9 +11296,9 @@
             "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
         },
         "construct-style-sheets-polyfill": {
-            "version": "3.0.3",
-            "resolved": "https://registry.npmjs.org/construct-style-sheets-polyfill/-/construct-style-sheets-polyfill-3.0.3.tgz",
-            "integrity": "sha512-z5sn55s4Avgpfj5uEKXP50DIawJoQ9iYtojSXrbxYL8W1njzZqW3/Yzsgmqgb2sV0NVvhn1cH5wk313DeQLzbA=="
+            "version": "2.4.17",
+            "resolved": "https://registry.npmjs.org/construct-style-sheets-polyfill/-/construct-style-sheets-polyfill-2.4.17.tgz",
+            "integrity": "sha512-rKtZGWWAVFE6HgdBuuui1emic/t8aAKQbePQ7Je6ird8nZYSd3mqqBX9IvFn2CMtnbh7mQTk/vxc9mfaLl7cGQ=="
         },
         "convert-source-map": {
             "version": "1.8.0",
diff --git a/web/package.json b/web/package.json
index 4b26115b0..4cbbf5365 100644
--- a/web/package.json
+++ b/web/package.json
@@ -74,7 +74,7 @@
         "chart.js": "^3.5.1",
         "chartjs-adapter-moment": "^1.0.0",
         "codemirror": "^5.63.1",
-        "construct-style-sheets-polyfill": "^3.0.3",
+        "construct-style-sheets-polyfill": "^2.4.16",
         "eslint": "^7.32.0",
         "eslint-config-google": "^0.14.0",
         "eslint-plugin-custom-elements": "0.0.2",