feat: require Node.js 22 or newer

.github/workflows/ci.yaml

@@ -43,8 +43,12 @@ jobs:
           fail_ci_if_error: true
       - run: pnpm build
       - run: pnpm test:integration
+      # Prove the exact consumer floor; development and integration stay on Node 24.
       - uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
-          node-version: "20"
+          node-version: "22.0.0"
           cache: "pnpm"
-      - run: pnpm test:package
+      - name: Test packed package on the minimum Node.js version
+        run: |
+          node --version
+          pnpm test:package

README.md

@@ -39,7 +39,8 @@ pnpm add prom-client@^15.1.3
 pnpm add hot-shots@^17.0.0
 ```
 
-DialCache requires Node.js 20 or Node.js 22 and newer.
+DialCache requires Node.js 22.0.0 or newer. Production deployments should use a
+[currently supported LTS release](https://nodejs.org/en/about/previous-releases).
 
 ## Quick start
 

package.json

@@ -93,7 +93,7 @@
     }
   },
   "engines": {
-    "node": "20 || >=22"
+    "node": ">=22.0.0"
   },
   "dependencies": {
     "@types/node": "^24.10.1",