diff --git a/package.json b/package.json
index 9b3156d..0ac5b61 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
         "gatsby-transformer-json": "^5",
         "gatsby-transformer-remark": "^6",
         "gatsby-transformer-sharp": "^5",
-        "postcss": "^8.1.0",
+        "postcss": "^8.4.31",
         "prismjs": "^1.27.0",
         "react": "^18.0.0",
         "react-dom": "^18.0.0",
diff --git a/yarn.lock b/yarn.lock
index 48f943d..8a9b893 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7622,10 +7622,10 @@ mute-stream@0.0.8, mute-stream@~0.0.4:
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
   integrity sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==
 
-nanoid@^3.3.4:
-  version "3.3.4"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.4.tgz#730b67e3cd09e2deacf03c027c81c9d9dbc5e8ab"
-  integrity sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==
+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==
 
 napi-build-utils@^1.0.1:
   version "1.0.2"
@@ -8527,12 +8527,12 @@ postcss@7.0.36:
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@^8.1.0, postcss@^8.2.15, postcss@^8.2.9, postcss@^8.3.11, postcss@^8.4.21:
-  version "8.4.21"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.21.tgz#c639b719a57efc3187b13a1d765675485f4134f4"
-  integrity sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==
+postcss@^8.2.15, postcss@^8.2.9, postcss@^8.3.11, postcss@^8.4.21, 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 "^3.3.4"
+    nanoid "^3.3.6"
     picocolors "^1.0.0"
     source-map-js "^1.0.2"