diff --git a/.node-version b/.node-version
index 3c032078..209e3ef4 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-18
+20
diff --git a/packages/gatsby-plugin-purgecss/package.json b/packages/gatsby-plugin-purgecss/package.json
index 817afd92..29dc1275 100644
--- a/packages/gatsby-plugin-purgecss/package.json
+++ b/packages/gatsby-plugin-purgecss/package.json
@@ -10,7 +10,7 @@
     "@types/fs-extra": "^11.0.0",
     "@types/jest": "^27.5.2",
     "@types/loader-utils": "^2.0.3",
-    "@types/node": "^18.11.18",
+    "@types/node": "^20.0.0",
     "@types/webpack": "^5.28.0",
     "@typescript-eslint/eslint-plugin": "^6.0.0",
     "coveralls": "^3.1.1",
diff --git a/yarn.lock b/yarn.lock
index cbeb2a61..a3baaebb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3460,13 +3460,22 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node@npm:*, @types/node@npm:>=10.0.0, @types/node@npm:^18.11.18":
+"@types/node@npm:*, @types/node@npm:>=10.0.0":
   version: 18.11.18
   resolution: "@types/node@npm:18.11.18"
   checksum: 03f17f9480f8d775c8a72da5ea7e9383db5f6d85aa5fefde90dd953a1449bd5e4ffde376f139da4f3744b4c83942166d2a7603969a6f8ea826edfb16e6e3b49d
   languageName: node
   linkType: hard
 
+"@types/node@npm:^20.0.0":
+  version: 20.8.9
+  resolution: "@types/node@npm:20.8.9"
+  dependencies:
+    undici-types: ~5.26.4
+  checksum: 0c05f3502a9507ff27e91dd6fd574fa6f391b3fafedcfe8e0c8d33351fb22d02c0121f854e5b6b3ecb9a8a468407ddf6e7ac0029fb236d4c7e1361ffc758a01f
+  languageName: node
+  linkType: hard
+
 "@types/node@npm:^8.5.7":
   version: 8.10.66
   resolution: "@types/node@npm:8.10.66"
@@ -9155,7 +9164,7 @@ __metadata:
     "@types/fs-extra": ^11.0.0
     "@types/jest": ^27.5.2
     "@types/loader-utils": ^2.0.3
-    "@types/node": ^18.11.18
+    "@types/node": ^20.0.0
     "@types/webpack": ^5.28.0
     "@typescript-eslint/eslint-plugin": ^6.0.0
     coveralls: ^3.1.1
@@ -17707,6 +17716,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~5.26.4":
+  version: 5.26.5
+  resolution: "undici-types@npm:5.26.5"
+  checksum: 3192ef6f3fd5df652f2dc1cd782b49d6ff14dc98e5dced492aa8a8c65425227da5da6aafe22523c67f035a272c599bb89cfe803c1db6311e44bed3042fc25487
+  languageName: node
+  linkType: hard
+
 "unicode-canonical-property-names-ecmascript@npm:^2.0.0":
   version: 2.0.0
   resolution: "unicode-canonical-property-names-ecmascript@npm:2.0.0"