diff --git a/web/package-lock.json b/web/package-lock.json
index fa5f898f8..92ecdc4a5 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -968,9 +968,9 @@
             "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
         },
         "construct-style-sheets-polyfill": {
-            "version": "2.4.3",
-            "resolved": "https://registry.npmjs.org/construct-style-sheets-polyfill/-/construct-style-sheets-polyfill-2.4.3.tgz",
-            "integrity": "sha512-ECo96zFPsdghrMJmJ0vomcHsqLOIYpudobcNCIPeMubyFzBcLCfljuY0oFA3DD7btiFqB0sZ+0szbsiE8I24VA=="
+            "version": "2.4.6",
+            "resolved": "https://registry.npmjs.org/construct-style-sheets-polyfill/-/construct-style-sheets-polyfill-2.4.6.tgz",
+            "integrity": "sha512-lU0to7dFDjKslMF+M5NUa4s0RQMBRVyZMXvD/vp7vmjdEPgziTkHSfZHQxfoIvVWajWRJUVJMLfrMwcx8fTh4A=="
         },
         "copy-descriptor": {
             "version": "0.1.1",
diff --git a/web/package.json b/web/package.json
index 1923b1899..1307799e9 100644
--- a/web/package.json
+++ b/web/package.json
@@ -15,7 +15,7 @@
         "@types/codemirror": "0.0.103",
         "chart.js": "^2.9.4",
         "codemirror": "^5.59.0",
-        "construct-style-sheets-polyfill": "^2.4.3",
+        "construct-style-sheets-polyfill": "^2.4.6",
         "flowchart.js": "^1.15.0",
         "lit-element": "^2.4.0",
         "lit-html": "^1.3.0",