diff --git a/packages/website/package-lock.json b/packages/website/package-lock.json
index 0df8599e..b8da1421 100644
--- a/packages/website/package-lock.json
+++ b/packages/website/package-lock.json
@@ -25,7 +25,7 @@
         "gatsby-plugin-manifest": "^3.8.0",
         "gatsby-plugin-matomo": "^0.10.0",
         "gatsby-plugin-offline": "^4.8.0",
-        "gatsby-plugin-postcss": "^4.8.0",
+        "gatsby-plugin-postcss": "^4.9.0",
         "gatsby-plugin-purgecss": "^6.0.2",
         "gatsby-plugin-react-helmet": "^4.8.0",
         "gatsby-plugin-robots-txt": "^1.6.8",
@@ -12007,9 +12007,9 @@
       }
     },
     "node_modules/gatsby-plugin-postcss": {
-      "version": "4.8.0",
-      "resolved": "https://registry.npmjs.org/gatsby-plugin-postcss/-/gatsby-plugin-postcss-4.8.0.tgz",
-      "integrity": "sha512-F3N3DEwGIC4AphKC1N/R8MGDJsXicjNthito6LCbs63b14U6JwKMnNmexmob25EBh2HFJETe0WiJBgVErUCdag==",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/gatsby-plugin-postcss/-/gatsby-plugin-postcss-4.9.0.tgz",
+      "integrity": "sha512-2h8kKimIPEk9kQyZWSzBoOQIBvUEYuLieA57oycuvxsA8S7S2QsNeyhBkhfakQ+gGiFG1He2WCFiOInxs+HcmQ==",
       "dependencies": {
         "@babel/runtime": "^7.14.0",
         "postcss-loader": "^4.3.0"
@@ -37524,9 +37524,9 @@
       }
     },
     "gatsby-plugin-postcss": {
-      "version": "4.8.0",
-      "resolved": "https://registry.npmjs.org/gatsby-plugin-postcss/-/gatsby-plugin-postcss-4.8.0.tgz",
-      "integrity": "sha512-F3N3DEwGIC4AphKC1N/R8MGDJsXicjNthito6LCbs63b14U6JwKMnNmexmob25EBh2HFJETe0WiJBgVErUCdag==",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/gatsby-plugin-postcss/-/gatsby-plugin-postcss-4.9.0.tgz",
+      "integrity": "sha512-2h8kKimIPEk9kQyZWSzBoOQIBvUEYuLieA57oycuvxsA8S7S2QsNeyhBkhfakQ+gGiFG1He2WCFiOInxs+HcmQ==",
       "requires": {
         "@babel/runtime": "^7.14.0",
         "postcss-loader": "^4.3.0"
diff --git a/packages/website/package.json b/packages/website/package.json
index f6af8f5b..143c4eae 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -22,7 +22,7 @@
     "gatsby-plugin-manifest": "^3.8.0",
     "gatsby-plugin-matomo": "^0.10.0",
     "gatsby-plugin-offline": "^4.8.0",
-    "gatsby-plugin-postcss": "^4.8.0",
+    "gatsby-plugin-postcss": "^4.9.0",
     "gatsby-plugin-purgecss": "^6.0.2",
     "gatsby-plugin-react-helmet": "^4.8.0",
     "gatsby-plugin-robots-txt": "^1.6.8",