diff --git a/integrations/content-resolution/package.json b/integrations/content-resolution/package.json
index 5fe481154..fa7bc4706 100644
--- a/integrations/content-resolution/package.json
+++ b/integrations/content-resolution/package.json
@@ -14,7 +14,7 @@
     ]
   },
   "devDependencies": {
-    "postcss": "^8.4.14",
+    "postcss": "^8.4.21",
     "postcss-cli": "^9.1.0"
   }
 }
diff --git a/integrations/postcss-cli/package.json b/integrations/postcss-cli/package.json
index bfade83f0..6a696eacb 100644
--- a/integrations/postcss-cli/package.json
+++ b/integrations/postcss-cli/package.json
@@ -14,7 +14,7 @@
     ]
   },
   "devDependencies": {
-    "postcss": "^8.4.14",
+    "postcss": "^8.4.21",
     "postcss-cli": "^9.1.0"
   }
 }
diff --git a/package-lock.json b/package-lock.json
index afe545b85..d251616da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
         "normalize-path": "^3.0.0",
         "object-hash": "^3.0.0",
         "picocolors": "^1.0.0",
-        "postcss": "^8.0.9",
+        "postcss": "^8.4.21",
         "postcss-import": "^14.1.0",
         "postcss-js": "^4.0.0",
         "postcss-load-config": "^3.1.4",
@@ -74,7 +74,7 @@
       "name": "@tailwindcss/integrations-content-resolution",
       "version": "0.0.0",
       "devDependencies": {
-        "postcss": "^8.4.14",
+        "postcss": "8.4.21",
         "postcss-cli": "^9.1.0"
       }
     },
@@ -89,7 +89,7 @@
       "name": "@tailwindcss/integrations-postcss-cli",
       "version": "0.0.0",
       "devDependencies": {
-        "postcss": "^8.4.14",
+        "postcss": "8.4.21",
         "postcss-cli": "^9.1.0"
       }
     },
@@ -11924,7 +11924,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.20",
+      "version": "8.4.21",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.21.tgz",
+      "integrity": "sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==",
       "funding": [
         {
           "type": "opencollective",
@@ -11935,7 +11937,6 @@
           "url": "https://tidelift.com/funding/github/npm/postcss"
         }
       ],
-      "license": "MIT",
       "dependencies": {
         "nanoid": "^3.3.4",
         "picocolors": "^1.0.0",
@@ -17771,7 +17772,7 @@
     "@tailwindcss/integrations-content-resolution": {
       "version": "file:integrations/content-resolution",
       "requires": {
-        "postcss": "^8.4.14",
+        "postcss": "8.4.21",
         "postcss-cli": "^9.1.0"
       }
     },
@@ -17784,7 +17785,7 @@
     "@tailwindcss/integrations-postcss-cli": {
       "version": "file:integrations/postcss-cli",
       "requires": {
-        "postcss": "^8.4.14",
+        "postcss": "8.4.21",
         "postcss-cli": "^9.1.0"
       }
     },
@@ -23837,7 +23838,9 @@
       "dev": true
     },
     "postcss": {
-      "version": "8.4.20",
+      "version": "8.4.21",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.21.tgz",
+      "integrity": "sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==",
       "requires": {
         "nanoid": "^3.3.4",
         "picocolors": "^1.0.0",
@@ -27403,7 +27406,7 @@
         "@tailwindcss/integrations-content-resolution": {
           "version": "file:integrations/content-resolution",
           "requires": {
-            "postcss": "^8.4.14",
+            "postcss": "8.4.21",
             "postcss-cli": "^9.1.0"
           }
         },
@@ -27416,7 +27419,7 @@
         "@tailwindcss/integrations-postcss-cli": {
           "version": "file:integrations/postcss-cli",
           "requires": {
-            "postcss": "^8.4.14",
+            "postcss": "8.4.21",
             "postcss-cli": "^9.1.0"
           }
         },
@@ -33469,7 +33472,9 @@
           "dev": true
         },
         "postcss": {
-          "version": "8.4.20",
+          "version": "8.4.21",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.21.tgz",
+          "integrity": "sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==",
           "requires": {
             "nanoid": "^3.3.4",
             "picocolors": "^1.0.0",
diff --git a/package.json b/package.json
index b19bd9ca3..6dc62b375 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     "normalize-path": "^3.0.0",
     "object-hash": "^3.0.0",
     "picocolors": "^1.0.0",
-    "postcss": "^8.0.9",
+    "postcss": "^8.4.21",
     "postcss-import": "^14.1.0",
     "postcss-js": "^4.0.0",
     "postcss-load-config": "^3.1.4",