diff --git a/package-lock.json b/package-lock.json
index 2bbe504..d392708 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3786,9 +3786,9 @@
       }
     },
     "css-what": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/css-what/-/css-what-3.2.0.tgz",
-      "integrity": "sha512-lukqnlbswsPmDZ5+ViDBCcrk+1fyPBA+ZoHSAQhRuEeXBKUb3Lj2kcTwMqoiFrJAnEeO9u3Oc8X617SUm3apYQ=="
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/css-what/-/css-what-5.0.1.tgz",
+      "integrity": "sha512-FYDTSHb/7KXsWICVsxdmiExPjCfRC4qRFBdVwv7Ax9hMnvMmEjP9RfxTEZ3qPZGmADDn2vAKSo9UcN1jKVYscg=="
     },
     "cssom": {
       "version": "0.3.8",
diff --git a/package.json b/package.json
index 6f346d0..99e8761 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.5.4",
-    "css-what": "^3.2.0",
+    "css-what": "^5.0.1",
     "prop-types": "^15.7.2"
   },
   "devDependencies": {