diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7bf5e0c..9715349 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,7 +36,7 @@ jobs:
         id: setup-node
         uses: actions/setup-node@v6
         with:
-          node-version: 20
+          node-version: 22
           cache: npm
 
       # Cache node_modules directly so a cache hit can skip `npm ci` entirely.
diff --git a/.node-version b/.node-version
new file mode 100644
index 0000000..2bd5a0a
--- /dev/null
+++ b/.node-version
@@ -0,0 +1 @@
+22
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..2bd5a0a
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+22
diff --git a/package.json b/package.json
index 7cc1372..0f2d09b 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,9 @@
   "name": "my-project",
   "version": "0.1.0",
   "private": true,
+  "engines": {
+    "node": ">=22.0.0"
+  },
   "workspaces": [
     "packages/*"
   ],