diff --git a/docs/package.json b/docs/package.json
index 48b3756..a1cec67 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -143,7 +143,7 @@
     "css-select-base-adapter": "^0.1.1",
     "css-tree": "^1.0.0-alpha.39",
     "css-unit-converter": "^1.1.2",
-    "css-what": "^3.3.0",
+    "css-what": "^5.0.1",
     "cssesc": "^3.0.0",
     "cssnano": "^4.1.10",
     "cssnano-preset-default": "^4.0.7",
diff --git a/docs/yarn.lock b/docs/yarn.lock
index 2147aaf..bee87f1 100644
--- a/docs/yarn.lock
+++ b/docs/yarn.lock
@@ -3114,11 +3114,16 @@ css-what@2.1:
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.3.tgz#a6d7604573365fe74686c3f311c56513d88285f2"
   integrity sha512-a+EPoD+uZiNfh+5fxw2nO9QwFa6nJe2Or35fGY6Ipw1R3R4AGz1d1TEZrCegvw2YTmZ0jXirGYlzxxpYSHwpEg==
 
-css-what@^3.2.1, css-what@^3.3.0:
+css-what@^3.2.1:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-3.3.0.tgz#10fec696a9ece2e591ac772d759aacabac38cd39"
   integrity sha512-pv9JPyatiPaQ6pf4OvD/dbfm0o5LviWmwxNWzblYf/1u9QZd0ihV+PMwy5jdQWQ3349kZmKEx9WXuSka2dM4cg==
 
+css-what@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/css-what/-/css-what-5.0.1.tgz#3efa820131f4669a8ac2408f9c32e7c7de9f4cad"
+  integrity sha512-FYDTSHb/7KXsWICVsxdmiExPjCfRC4qRFBdVwv7Ax9hMnvMmEjP9RfxTEZ3qPZGmADDn2vAKSo9UcN1jKVYscg==
+
 css@^2.0.0:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/css/-/css-2.2.4.tgz#c646755c73971f2bba6a601e2cf2fd71b1298929"