diff --git a/package.json b/package.json
index 9eccacb..c2f4ad7 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "stylelint": "^16.6.1",
     "stylelint-config-standard": "^36.0.1",
     "stylelint-config-standard-scss": "^13.1.0",
-    "stylelint-scss": "^6.3.2"
+    "stylelint-scss": "^6.4.0"
   },
   "config": {
     "port": 3000
diff --git a/yarn.lock b/yarn.lock
index 85e1519..7e8e88d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1073,6 +1073,11 @@ known-css-properties@^0.31.0:
   resolved "https://registry.yarnpkg.com/known-css-properties/-/known-css-properties-0.31.0.tgz#5c8d9d8777b3ca09482b2397f6a241e5d69a1023"
   integrity sha512-sBPIUGTNF0czz0mwGGUoKKJC8Q7On1GPbCSFPfyEsfHb2DyBG0Y4QtV+EVWpINSaiGKZblDNuF5AezxSgOhesQ==
 
+known-css-properties@^0.34.0:
+  version "0.34.0"
+  resolved "https://registry.yarnpkg.com/known-css-properties/-/known-css-properties-0.34.0.tgz#ccd7e9f4388302231b3f174a8b1d5b1f7b576cea"
+  integrity sha512-tBECoUqNFbyAY4RrbqsBQqDFpGXAEbdD5QKr8kACx3+rnArmuuR22nKQWKazvp07N9yjTyDZaw/20UIH8tL9DQ==
+
 levn@^0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/levn/-/levn-0.4.1.tgz#ae4562c007473b932a6200d403268dd2fffc6ade"
@@ -1505,12 +1510,12 @@ stylelint-config-standard@^36.0.0, stylelint-config-standard@^36.0.1:
   dependencies:
     stylelint-config-recommended "^14.0.1"
 
-stylelint-scss@^6.0.0, stylelint-scss@^6.3.2:
-  version "6.3.2"
-  resolved "https://registry.yarnpkg.com/stylelint-scss/-/stylelint-scss-6.3.2.tgz#085072e774e5a31e65aa2acefaad5417a29d6ec1"
-  integrity sha512-pNk9mXOVKkQtd+SROPC9io8ISSgX+tOVPhFdBE+LaKQnJMLdWPbGKAGYv4Wmf/RrnOjkutunNTN9kKMhkdE5qA==
+stylelint-scss@^6.0.0, stylelint-scss@^6.4.0:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/stylelint-scss/-/stylelint-scss-6.4.0.tgz#f4e5f4fe334fa7dc32bc289682a5683a3c4c37b9"
+  integrity sha512-1BKRzh2TW38hZm/IWdvBVjlJRERB2zTiwm1xaOeDtUEmEKfxYMNr9THBQQtBV8wGxal/sN+TRsF7v9A5sqGI1A==
   dependencies:
-    known-css-properties "^0.31.0"
+    known-css-properties "^0.34.0"
     postcss-media-query-parser "^0.2.3"
     postcss-resolve-nested-selector "^0.1.1"
     postcss-selector-parser "^6.1.0"