diff --git a/package.json b/package.json
index 86b63b0..fbc418d 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "mdx-bundler": "^9.2.1",
     "next": "12.1.4",
     "next-themes": "^0.2.1",
-    "postcss": "^8.4.5",
+    "postcss": "^8.4.31",
     "preact": "^10.6.2",
     "react": "17.0.2",
     "react-dom": "17.0.2",
diff --git a/yarn.lock b/yarn.lock
index 686ab8e..a4095f2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5370,12 +5370,7 @@ mz@^2.7.0:
     object-assign "^4.0.1"
     thenify-all "^1.0.0"
 
-nanoid@^3.1.30:
-  version "3.3.4"
-  resolved "https://registry.npmjs.org/nanoid/-/nanoid-3.3.4.tgz#730b67e3cd09e2deacf03c027c81c9d9dbc5e8ab"
-  integrity sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==
-
-nanoid@^3.3.6:
+nanoid@^3.1.30, nanoid@^3.3.6:
   version "3.3.6"
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.6.tgz#443380c856d6e9f9824267d960b4236ad583ea4c"
   integrity sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==
@@ -5832,10 +5827,10 @@ postcss@8.4.5:
     picocolors "^1.0.0"
     source-map-js "^1.0.1"
 
-postcss@^8.4.23, postcss@^8.4.5:
-  version "8.4.23"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.23.tgz#df0aee9ac7c5e53e1075c24a3613496f9e6552ab"
-  integrity sha512-bQ3qMcpF6A/YjR55xtoTr0jGOlnPOKAIMdOWiv0EIT6HVPEaJiJB4NLljSbiHoC2RX7DN5Uvjtpbg1NPdwv1oA==
+postcss@^8.4.23, postcss@^8.4.31:
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"