diff --git a/experimental/atmii/packages/client/package.json b/experimental/atmii/packages/client/package.json
index 89ab4e4..272cbd1 100644
--- a/experimental/atmii/packages/client/package.json
+++ b/experimental/atmii/packages/client/package.json
@@ -32,6 +32,7 @@
   },
   "devDependencies": {
     "@parcel/transformer-typescript-types": "^2.12.0",
+    "@types/node": "^22.13.8",
     "@types/react": "^19.0.10",
     "@types/react-dom": "^19.0.4",
     "@typescript-eslint/eslint-plugin": "^8.25.0",
diff --git a/experimental/atmii/pnpm-lock.yaml b/experimental/atmii/pnpm-lock.yaml
index e91aebc..ee0d3d7 100644
--- a/experimental/atmii/pnpm-lock.yaml
+++ b/experimental/atmii/pnpm-lock.yaml
@@ -84,6 +84,9 @@ importers:
       '@parcel/transformer-typescript-types':
         specifier: ^2.12.0
         version: 2.16.3(@parcel/core@2.16.3(@swc/helpers@0.5.18))(typescript@5.9.3)
+      '@types/node':
+        specifier: ^22.13.8
+        version: 22.19.3
       '@types/react':
         specifier: ^19.0.10
         version: 19.2.7