diff --git a/package.json b/package.json
index 686efe847..de011705b 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "@vuepress/plugin-back-to-top": "^2.0.0-beta.25",
     "@vuepress/plugin-debug": "^2.0.0-beta.25",
     "@vuepress/plugin-search": "^2.0.0-beta.25",
-    "postcss-loader": "^7.1.0",
+    "postcss-loader": "^7.2.3",
     "prettier": "^2.8.0",
     "sass": "^1.51.0",
     "sass-loader": "^13.2.0",
diff --git a/yarn.lock b/yarn.lock
index 03b383fe4..2f5c0e2ca 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1438,6 +1438,11 @@ cose-base@^2.2.0:
   dependencies:
     layout-base "^2.0.0"
 
+cosmiconfig-typescript-loader@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/cosmiconfig-typescript-loader/-/cosmiconfig-typescript-loader-4.3.0.tgz#c4259ce474c9df0f32274ed162c0447c951ef073"
+  integrity sha512-NTxV1MFfZDLPiBMjxbHRwSh5LaLcPMwNdCutmnHJCKoVnlvldPWlllonKwrsRJ5pYZBIBGRWWU2tfvzxgeSW5Q==
+
 cosmiconfig@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-7.0.0.tgz#ef9b44d773959cae63ddecd122de23853b60f8d3"
@@ -1449,10 +1454,10 @@ cosmiconfig@^7.0.0:
     path-type "^4.0.0"
     yaml "^1.10.0"
 
-cosmiconfig@^8.0.0:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-8.1.0.tgz#947e174c796483ccf0a48476c24e4fefb7e1aea8"
-  integrity sha512-0tLZ9URlPGU7JsKq0DQOQ3FoRsYX8xDZ7xMiATQfaiGMz7EHowNkbU9u1coAOmnh9p/1ySpm0RB3JNWRXM5GCg==
+cosmiconfig@^8.1.3:
+  version "8.1.3"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-8.1.3.tgz#0e614a118fcc2d9e5afc2f87d53cd09931015689"
+  integrity sha512-/UkO2JKI18b5jVMJUp0lvKFMpa/Gye+ZgZjKD+DGEN9y7NRcf/nK1A0sp67ONmKtnDCNMS44E6jrk0Yc3bDuUw==
   dependencies:
     import-fresh "^3.2.1"
     js-yaml "^4.1.0"
@@ -3781,12 +3786,13 @@ postcss-loader@^6.1.1:
     klona "^2.0.4"
     semver "^7.3.5"
 
-postcss-loader@^7.1.0:
-  version "7.1.0"
-  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-7.1.0.tgz#3ba0dfddff06043f3eac7690a1d8b432264bb866"
-  integrity sha512-vTD2DJ8vJD0Vr1WzMQkRZWRjcynGh3t7NeoLg+Sb1TeuK7etiZfL/ZwHbaVa3M+Qni7Lj/29voV9IggnIUjlIw==
+postcss-loader@^7.2.3:
+  version "7.2.3"
+  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-7.2.3.tgz#c2d491a769102e0aac228d53fb1ad376cc158bb2"
+  integrity sha512-H/PIjgbn2q7zFnmUMPvEupIFnOAg+fYWC/4F6DugK8uPITVYyEflnSjLFV0u20B3Qi88PzPiAlzn8hBSu3f8oA==
   dependencies:
-    cosmiconfig "^8.0.0"
+    cosmiconfig "^8.1.3"
+    cosmiconfig-typescript-loader "^4.3.0"
     klona "^2.0.6"
     semver "^7.3.8"