diff --git a/package.json b/package.json
index 5fb6b7f..e230c04 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "happy-dom": "^10.7.0",
     "jotai": "^1.8.0",
     "lodash-es": "4.17.21",
-    "postcss": "^8.4.16",
+    "postcss": "^8.4.31",
     "prettier": "^2.7.1",
     "react-icons": "^4.4.0",
     "react-loader-spinner": "^5.2.0",
diff --git a/yarn.lock b/yarn.lock
index d506216..045334c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3321,8 +3321,9 @@ eslint@^8.22.0:
     strip-ansi "^6.0.1"
     text-table "^0.2.0"
 
-"esm@github:agoric-labs/esm#Agoric-built":
+esm@agoric-labs/esm#Agoric-built:
   version "3.2.25"
+  uid "3603726ad4636b2f865f463188fcaade6375638e"
   resolved "https://codeload.github.com/agoric-labs/esm/tar.gz/3603726ad4636b2f865f463188fcaade6375638e"
 
 espree@^9.6.0, espree@^9.6.1:
@@ -4887,10 +4888,10 @@ postcss-value-parser@^4.0.0, postcss-value-parser@^4.0.2, postcss-value-parser@^
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@^8.4.16, postcss@^8.4.18, postcss@^8.4.23, postcss@^8.4.27:
-  version "8.4.30"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.30.tgz#0e0648d551a606ef2192a26da4cabafcc09c1aa7"
-  integrity sha512-7ZEao1g4kd68l97aWG/etQKPKq07us0ieSZ2TnFDk11i0ZfDW2AwKHYU8qv4MZKqN2fdBfg+7q0ES06UA73C1g==
+postcss@^8.4.18, postcss@^8.4.23, postcss@^8.4.27, 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"