diff --git a/package.json b/package.json
index 1dfd312bb6..42f025c47c 100644
--- a/package.json
+++ b/package.json
@@ -124,7 +124,7 @@
     "mini-css-extract-plugin": "^2.6.1",
     "monaco-editor-webpack-plugin": "^3.0.0",
     "npm-run-all2": "^7.0.1",
-    "postcss": "^8.5.12",
+    "postcss": "^8.5.18",
     "postcss-less": "^6.0.0",
     "resolve-url-loader": "^5.0.0",
     "standard": "^17.1.0",
diff --git a/yarn.lock b/yarn.lock
index fd473ef2f3..368a9ee1fa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5373,7 +5373,7 @@ __metadata:
     npm-run-all2: "npm:^7.0.1"
     p-debounce: "npm:^2.0.0"
     parse-env-string: "npm:^1.0.1"
-    postcss: "npm:^8.5.12"
+    postcss: "npm:^8.5.18"
     postcss-less: "npm:^6.0.0"
     prettier: "npm:^3.6.2"
     react: "npm:^16.14.0"
@@ -10567,25 +10567,25 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.5.12":
-  version: 8.5.12
-  resolution: "postcss@npm:8.5.12"
+"postcss@npm:^8.5.15":
+  version: 8.5.15
+  resolution: "postcss@npm:8.5.15"
   dependencies:
-    nanoid: "npm:^3.3.11"
+    nanoid: "npm:^3.3.12"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10c0/5baebaf574c567bc1b3d61197f38af4ce5920b8f611c887fb6bc3dcc14af00253c169dbf19897bc889cce0b0d9818ab5eb4ea0caedf02b0bab10da8a43ce8c12
+  checksum: 10c0/7f2e63ae22fbe43aace1bf652bd99da4e90737c64194d49e51ddc9cd0f9e51ff2861a7d734379b494deffa03a880a5c65eec70bc29ee9ebaa7136dde3eee8f31
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.5.15":
-  version: 8.5.15
-  resolution: "postcss@npm:8.5.15"
+"postcss@npm:^8.5.18":
+  version: 8.5.18
+  resolution: "postcss@npm:8.5.18"
   dependencies:
     nanoid: "npm:^3.3.12"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10c0/7f2e63ae22fbe43aace1bf652bd99da4e90737c64194d49e51ddc9cd0f9e51ff2861a7d734379b494deffa03a880a5c65eec70bc29ee9ebaa7136dde3eee8f31
+  checksum: 10c0/6fbab24a457ca5b90d423c333d0bab13e6646fda646e83235eed892f9e4f2dc6c50689ddc5ac1632fc085be2e096d2e8e03779ac092de6353e1cfcbbc3681685
   languageName: node
   linkType: hard