diff --git a/client/package.json b/client/package.json
index b5c53aa3143..1a6ea7ee934 100644
--- a/client/package.json
+++ b/client/package.json
@@ -86,7 +86,7 @@
     "nanoid": "3.3.4",
     "normalize-url": "4.5.1",
     "path-browserify": "1.0.1",
-    "postcss": "8.4.17",
+    "postcss": "8.4.18",
     "prismjs": "1.29.0",
     "process": "0.11.10",
     "prop-types": "15.8.1",
diff --git a/package-lock.json b/package-lock.json
index 21d80c6dccf..221c55338e8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -482,7 +482,7 @@
         "nanoid": "3.3.4",
         "normalize-url": "4.5.1",
         "path-browserify": "1.0.1",
-        "postcss": "8.4.17",
+        "postcss": "8.4.18",
         "prismjs": "1.29.0",
         "process": "0.11.10",
         "prop-types": "15.8.1",
@@ -40999,9 +40999,9 @@
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-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.17.tgz",
-      "integrity": "sha512-UNxNOLQydcOFi41yHNMcKRZ39NeXlr8AxGuZJsdub8vIb12fHzcq37DTU/QtbI6WLxNg2gF9Z+8qtRwTj1UI1Q==",
+      "version": "8.4.18",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.18.tgz",
+      "integrity": "sha512-Wi8mWhncLJm11GATDaQKobXSNEYGUHeQLiQqDFG1qQ5UTDPTEvKw0Xt5NsTpktGTwLps3ByrWsBrG0rB8YQ9oA==",
       "funding": [
         {
           "type": "opencollective",
@@ -54785,7 +54785,7 @@
         "babel-loader": "8.2.5",
         "babel-plugin-transform-react-remove-prop-types": "0.4.24",
         "cross-env": "7.0.3",
-        "postcss": "8.4.17",
+        "postcss": "8.4.18",
         "postcss-import": "14.1.0",
         "rimraf": "3.0.2",
         "rollup": "2.79.1",
@@ -57003,7 +57003,7 @@
         "nanoid": "3.3.4",
         "normalize-url": "4.5.1",
         "path-browserify": "1.0.1",
-        "postcss": "8.4.17",
+        "postcss": "8.4.18",
         "prismjs": "1.29.0",
         "process": "0.11.10",
         "prop-types": "15.8.1",
@@ -57316,7 +57316,7 @@
         "babel-loader": "8.2.5",
         "babel-plugin-transform-react-remove-prop-types": "0.4.24",
         "cross-env": "7.0.3",
-        "postcss": "8.4.17",
+        "postcss": "8.4.18",
         "postcss-import": "14.1.0",
         "react": "16.14.0",
         "react-dom": "16.14.0",
@@ -83150,9 +83150,9 @@
       "version": "0.1.1"
     },
     "postcss": {
-      "version": "8.4.17",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.17.tgz",
-      "integrity": "sha512-UNxNOLQydcOFi41yHNMcKRZ39NeXlr8AxGuZJsdub8vIb12fHzcq37DTU/QtbI6WLxNg2gF9Z+8qtRwTj1UI1Q==",
+      "version": "8.4.18",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.18.tgz",
+      "integrity": "sha512-Wi8mWhncLJm11GATDaQKobXSNEYGUHeQLiQqDFG1qQ5UTDPTEvKw0Xt5NsTpktGTwLps3ByrWsBrG0rB8YQ9oA==",
       "requires": {
         "nanoid": "^3.3.4",
         "picocolors": "^1.0.0",
diff --git a/tools/ui-components/package.json b/tools/ui-components/package.json
index bb1d08732ab..372cd1fbce5 100644
--- a/tools/ui-components/package.json
+++ b/tools/ui-components/package.json
@@ -47,7 +47,7 @@
     "babel-loader": "8.2.5",
     "babel-plugin-transform-react-remove-prop-types": "0.4.24",
     "cross-env": "7.0.3",
-    "postcss": "8.4.17",
+    "postcss": "8.4.18",
     "postcss-import": "14.1.0",
     "rimraf": "3.0.2",
     "rollup": "2.79.1",