diff --git a/package.json b/package.json
index 8afe8ed..ee0a478 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": "^6.2.1",
+    "postcss-loader": "^7.0.0",
     "prettier": "^2.6.2",
     "sass": "^1.51.0",
     "sass-loader": "^12.6.0",
diff --git a/yarn.lock b/yarn.lock
index b740335..b4993ae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3082,12 +3082,7 @@ kind-of@^6.0.0, kind-of@^6.0.2:
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.3.tgz#07c05034a6c349fa06e24fa35aa76db4580ce4dd"
   integrity sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw==
 
-klona@^2.0.4:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/klona/-/klona-2.0.4.tgz#7bb1e3affb0cb8624547ef7e8f6708ea2e39dfc0"
-  integrity sha512-ZRbnvdg/NxqzC7L9Uyqzf4psi1OM4Cuc+sJAkQPjO6XkQIJTNbfK2Rsmbw8fx1p2mkZdp2FZYo2+LwXYY/uwIA==
-
-klona@^2.0.5:
+klona@^2.0.4, klona@^2.0.5:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/klona/-/klona-2.0.5.tgz#d166574d90076395d9963aa7a928fabb8d76afbc"
   integrity sha512-pJiBpiXMbt7dkzXe8Ghj/u4FfXOOa98fPW+bihOJ4SjnoijweJrNThJfd3ifXpXhREjpoF2mZVH1GfS9LV3kHQ==
@@ -3668,14 +3663,14 @@ postcss-loader@^6.1.1:
     klona "^2.0.4"
     semver "^7.3.5"
 
-postcss-loader@^6.2.1:
-  version "6.2.1"
-  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-6.2.1.tgz#0895f7346b1702103d30fdc66e4d494a93c008ef"
-  integrity sha512-WbbYpmAaKcux/P66bZ40bpWsBucjx/TTgVVzRZ9yUO8yQfVBlameJ0ZGVaPfH64hNSBh63a+ICP5nqOpBA0w+Q==
+postcss-loader@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-7.0.0.tgz#367d10eb1c5f1d93700e6b399683a6dc7c3af396"
+  integrity sha512-IDyttebFzTSY6DI24KuHUcBjbAev1i+RyICoPEWcAstZsj03r533uMXtDn506l6/wlsRYiS5XBdx7TpccCsyUg==
   dependencies:
     cosmiconfig "^7.0.0"
     klona "^2.0.5"
-    semver "^7.3.5"
+    semver "^7.3.7"
 
 postcss-modules-extract-imports@^3.0.0:
   version "3.0.0"
@@ -4040,10 +4035,10 @@ selfsigned@^1.10.11:
   dependencies:
     node-forge "^0.10.0"
 
-semver@^7.3.5:
-  version "7.3.5"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
-  integrity sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==
+semver@^7.3.5, semver@^7.3.7:
+  version "7.3.7"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.7.tgz#12c5b649afdbf9049707796e22a4028814ce523f"
+  integrity sha512-QlYTucUYOews+WeEujDoEGziz4K6c47V/Bd+LjSSYcA94p+DmINdf7ncaUinThfvZyu13lN9OY1XDxt8C0Tw0g==
   dependencies:
     lru-cache "^6.0.0"