diff --git a/node_modules/postcss-selector-parser/package.json b/node_modules/postcss-selector-parser/package.json
index dce071cdcb2b3..d1f6be84cc5c7 100644
--- a/node_modules/postcss-selector-parser/package.json
+++ b/node_modules/postcss-selector-parser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcss-selector-parser",
-  "version": "6.0.13",
+  "version": "6.0.15",
   "devDependencies": {
     "@babel/cli": "^7.11.6",
     "@babel/core": "^7.11.6",
@@ -18,7 +18,7 @@
     "glob": "^8.0.3",
     "minimist": "^1.2.5",
     "nyc": "^15.1.0",
-    "postcss": "^8.0.0",
+    "postcss": "^8.4.31",
     "semver": "^7.3.2",
     "typescript": "^4.0.3"
   },
diff --git a/package-lock.json b/package-lock.json
index 9f74b41c86f4a..c4294f32e517d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11003,9 +11003,9 @@
       "dev": true
     },
     "node_modules/postcss-selector-parser": {
-      "version": "6.0.13",
-      "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.13.tgz",
-      "integrity": "sha512-EaV1Gl4mUEV4ddhDnv/xtj7sxwrwxdetHdWUGnT4VJQf+4d05v6lHYZr8N573k5Z0BViss7BDhfWtKS3+sfAqQ==",
+      "version": "6.0.15",
+      "resolved": "https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.15.tgz",
+      "integrity": "sha512-rEYkQOMUCEMhsKbK66tbEU9QVIxbhN18YiniAwA7XQYTVBqrBy+P2p5JcdqsHgKM2zWylp8d7J6eszocfds5Sw==",
       "dependencies": {
         "cssesc": "^3.0.0",
         "util-deprecate": "^1.0.2"