diff --git a/package-lock.json b/package-lock.json
index cf932a1363..5368749853 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -159,7 +159,7 @@
         "node-ipc": "9.2.1",
         "pkg": "5.8.1",
         "postcss": "8.4.35",
-        "postcss-loader": "7.3.4",
+        "postcss-loader": "8.1.1",
         "prettier": "3.2.2",
         "prettier-plugin-tailwindcss": "0.5.12",
         "process": "0.11.10",
@@ -31501,25 +31501,34 @@
       }
     },
     "node_modules/postcss-loader": {
-      "version": "7.3.4",
-      "resolved": "https://registry.npmjs.org/postcss-loader/-/postcss-loader-7.3.4.tgz",
-      "integrity": "sha512-iW5WTTBSC5BfsBJ9daFMPVrLT36MrNiC6fqOZTTaHjBNX6Pfd5p+hSBqe/fEeNd7pc13QiAyGt7VdGMw4eRC4A==",
+      "version": "8.1.1",
+      "resolved": "https://registry.npmjs.org/postcss-loader/-/postcss-loader-8.1.1.tgz",
+      "integrity": "sha512-0IeqyAsG6tYiDRCYKQJLAmgQr47DX6N7sFSWvQxt6AcupX8DIdmykuk/o/tx0Lze3ErGHJEp5OSRxrelC6+NdQ==",
       "dev": true,
       "dependencies": {
-        "cosmiconfig": "^8.3.5",
+        "cosmiconfig": "^9.0.0",
         "jiti": "^1.20.0",
         "semver": "^7.5.4"
       },
       "engines": {
-        "node": ">= 14.15.0"
+        "node": ">= 18.12.0"
       },
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/webpack"
       },
       "peerDependencies": {
+        "@rspack/core": "0.x || 1.x",
         "postcss": "^7.0.0 || ^8.0.1",
         "webpack": "^5.0.0"
+      },
+      "peerDependenciesMeta": {
+        "@rspack/core": {
+          "optional": true
+        },
+        "webpack": {
+          "optional": true
+        }
       }
     },
     "node_modules/postcss-loader/node_modules/argparse": {
@@ -31529,15 +31538,15 @@
       "dev": true
     },
     "node_modules/postcss-loader/node_modules/cosmiconfig": {
-      "version": "8.3.6",
-      "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-8.3.6.tgz",
-      "integrity": "sha512-kcZ6+W5QzcJ3P1Mt+83OUv/oHFqZHIx8DuxG6eZ5RGMERoLqp4BuGjhHLYGK+Kf5XVkQvqBSmAy/nGWN3qDgEA==",
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-9.0.0.tgz",
+      "integrity": "sha512-itvL5h8RETACmOTFc4UfIyB2RfEHi71Ax6E/PivVxq9NseKbOWpeyHEOIbmAw1rs8Ak0VursQNww7lf7YtUwzg==",
       "dev": true,
       "dependencies": {
+        "env-paths": "^2.2.1",
         "import-fresh": "^3.3.0",
         "js-yaml": "^4.1.0",
-        "parse-json": "^5.2.0",
-        "path-type": "^4.0.0"
+        "parse-json": "^5.2.0"
       },
       "engines": {
         "node": ">=14"
diff --git a/package.json b/package.json
index 59d84a7427..86026c6e93 100644
--- a/package.json
+++ b/package.json
@@ -120,7 +120,7 @@
     "node-ipc": "9.2.1",
     "pkg": "5.8.1",
     "postcss": "8.4.35",
-    "postcss-loader": "7.3.4",
+    "postcss-loader": "8.1.1",
     "prettier": "3.2.2",
     "prettier-plugin-tailwindcss": "0.5.12",
     "process": "0.11.10",