diff --git a/.node-version b/.node-version
index 87ec8842..f3f52b42 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-18.18.2
+20.9.0
diff --git a/package.json b/package.json
index e01b8e49..e5a1ae63 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
   },
   "devDependencies": {
     "@types/cookie": "0.5.4",
-    "@types/node": "18.18.10",
+    "@types/node": "20.9.2",
     "@typescript-eslint/eslint-plugin": "6.11.0",
     "@typescript-eslint/parser": "6.11.0",
     "c8": "8.0.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e492a400..ea7a4057 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -22,8 +22,8 @@ importers:
         specifier: 0.5.4
         version: 0.5.4
       '@types/node':
-        specifier: 18.18.10
-        version: 18.18.10
+        specifier: 20.9.2
+        version: 20.9.2
       '@typescript-eslint/eslint-plugin':
         specifier: 6.11.0
         version: 6.11.0(@typescript-eslint/parser@6.11.0)(eslint@8.54.0)(typescript@5.2.2)
@@ -901,6 +901,12 @@ packages:
       undici-types: 5.26.5
     dev: true
 
+  /@types/node@20.9.2:
+    resolution: {integrity: sha512-WHZXKFCEyIUJzAwh3NyyTHYSR35SevJ6mZ1nWwJafKtiQbqRTIKSRcw3Ma3acqgsent3RRDqeVwpHntMk+9irg==}
+    dependencies:
+      undici-types: 5.26.5
+    dev: true
+
   /@types/prop-types@15.7.10:
     resolution: {integrity: sha512-mxSnDQxPqsZxmeShFH+uwQ4kO4gcJcGahjjMFeLbKE95IAZiiZyiEepGZjtXJ7hN/yfu0bu9xN2ajcU0JcxX6A==}
     dev: true