diff --git a/package.json b/package.json
index 21f16233..de1570bf 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     "polymer-cli": "^1.9.11",
     "polyserve": "^0.27.15",
     "rollup": "^2.35.1",
-    "stylelint": "^13.9.0",
+    "stylelint": "^13.12.0",
     "stylelint-config-vaadin": "0.1.4",
     "typescript": "^4.1.5",
     "uglify-es": "^3.3.9",
diff --git a/yarn.lock b/yarn.lock
index 3489f78e..ba45fefe 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5222,7 +5222,7 @@ figures@^2.0.0:
   dependencies:
     escape-string-regexp "^1.0.5"
 
-file-entry-cache@^6.0.0, file-entry-cache@^6.0.1:
+file-entry-cache@^6.0.1:
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-6.0.1.tgz#211b2dd9659cb0394b073e7323ac3c933d522027"
   integrity sha512-7Gps/XWymbLk2QLYK4NzpMOrYjMhdIxXuIvy2QBsLE6ljuodKvdkWs/cpyJJ3CVIVpH0Oi1Hvg1ovbMzLdFBBg==
@@ -7328,10 +7328,10 @@ kind-of@^6.0.0, kind-of@^6.0.2, kind-of@^6.0.3:
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.3.tgz#07c05034a6c349fa06e24fa35aa76db4580ce4dd"
   integrity sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw==
 
-known-css-properties@^0.20.0:
-  version "0.20.0"
-  resolved "https://registry.yarnpkg.com/known-css-properties/-/known-css-properties-0.20.0.tgz#0570831661b47dd835293218381166090ff60e96"
-  integrity sha512-URvsjaA9ypfreqJ2/ylDr5MUERhJZ+DhguoWRr2xgS5C7aGCalXo+ewL+GixgKBfhT2vuL02nbIgNGqVWgTOYw==
+known-css-properties@^0.21.0:
+  version "0.21.0"
+  resolved "https://registry.yarnpkg.com/known-css-properties/-/known-css-properties-0.21.0.tgz#15fbd0bbb83447f3ce09d8af247ed47c68ede80d"
+  integrity sha512-sZLUnTqimCkvkgRS+kbPlYW5o8q5w1cu+uIisKpEWkj31I8mx8kNG162DwRav8Zirkva6N5uoFsm9kzK4mUXjw==
 
 kuler@1.0.x:
   version "1.0.1"
@@ -10715,10 +10715,10 @@ string-width@^1.0.1, string-width@^1.0.2:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
-string-width@^4.1.0, string-width@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.0.tgz#952182c46cc7b2c313d1596e623992bd163b72b5"
-  integrity sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==
+string-width@^4.1.0, string-width@^4.2.0, string-width@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.2.tgz#dafd4f9559a7585cfba529c6a0a4f73488ebd4c5"
+  integrity sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==
   dependencies:
     emoji-regex "^8.0.0"
     is-fullwidth-code-point "^3.0.0"
@@ -10887,10 +10887,10 @@ stylelint-config-vaadin@0.1.4:
   resolved "https://registry.yarnpkg.com/stylelint-config-vaadin/-/stylelint-config-vaadin-0.1.4.tgz#bc3161ffb1eb27039e08cc875f1b6e32ab01f03a"
   integrity sha512-OpjDsasSV8bQAvs7OjRaGF0Gj7mFDh6PEgOfdxTgYj0CJY5XAey9mLa7rJQcnJ1uzkm6TIeHR81tT+N6eSFrTg==
 
-stylelint@^13.9.0:
-  version "13.9.0"
-  resolved "https://registry.yarnpkg.com/stylelint/-/stylelint-13.9.0.tgz#93921ee6e11d4556b9f31131f485dc813b68e32a"
-  integrity sha512-VVWH2oixOAxpWL1vH+V42ReCzBjW2AeqskSAbi8+3OjV1Xg3VZkmTcAqBZfRRvJeF4BvYuDLXebW3tIHxgZDEg==
+stylelint@^13.12.0:
+  version "13.12.0"
+  resolved "https://registry.yarnpkg.com/stylelint/-/stylelint-13.12.0.tgz#cceb922be0d0c7b7b6926271eea2b90cb924733e"
+  integrity sha512-P8O1xDy41B7O7iXaSlW+UuFbE5+ZWQDb61ndGDxKIt36fMH50DtlQTbwLpFLf8DikceTAb3r6nPrRv30wBlzXw==
   dependencies:
     "@stylelint/postcss-css-in-js" "^0.37.2"
     "@stylelint/postcss-markdown" "^0.36.2"
@@ -10902,7 +10902,7 @@ stylelint@^13.9.0:
     execall "^2.0.0"
     fast-glob "^3.2.5"
     fastest-levenshtein "^1.0.12"
-    file-entry-cache "^6.0.0"
+    file-entry-cache "^6.0.1"
     get-stdin "^8.0.0"
     global-modules "^2.0.0"
     globby "^11.0.2"
@@ -10911,8 +10911,8 @@ stylelint@^13.9.0:
     ignore "^5.1.8"
     import-lazy "^4.0.0"
     imurmurhash "^0.1.4"
-    known-css-properties "^0.20.0"
-    lodash "^4.17.20"
+    known-css-properties "^0.21.0"
+    lodash "^4.17.21"
     log-symbols "^4.0.0"
     mathml-tag-names "^2.1.3"
     meow "^9.0.0"
@@ -10932,7 +10932,7 @@ stylelint@^13.9.0:
     resolve-from "^5.0.0"
     slash "^3.0.0"
     specificity "^0.4.1"
-    string-width "^4.2.0"
+    string-width "^4.2.2"
     strip-ansi "^6.0.0"
     style-search "^0.1.0"
     sugarss "^2.0.0"