diff --git a/.github/workflows/ci_main.yml b/.github/workflows/ci_main.yml
index 0bb556da4f..20e2f45540 100644
--- a/.github/workflows/ci_main.yml
+++ b/.github/workflows/ci_main.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: ['18', '20']
+        node: ['20', '22', '24']
 
     name: Node ${{ matrix.node }} build
 
diff --git a/packages/observable/package.json b/packages/observable/package.json
index e296727097..6b2aa1261b 100644
--- a/packages/observable/package.json
+++ b/packages/observable/package.json
@@ -66,5 +66,8 @@
         "default": "./dist/commonjs/index.js"
       }
     }
-  }
+  },
+  "engines": {
+    "node": ">=20.19"
+  },
 }
diff --git a/packages/rxjs/README.md b/packages/rxjs/README.md
index 2c6eb1fa9b..4a42ab83f8 100644
--- a/packages/rxjs/README.md
+++ b/packages/rxjs/README.md
@@ -2,6 +2,7 @@
 
 ![CI](https://github.com/reactivex/rxjs/workflows/CI/badge.svg)
 [![npm version](https://badge.fury.io/js/rxjs.svg)](http://badge.fury.io/js/rxjs)
+![minimum node version](https://img.shields.io/node/v/rxjs.svg)
 [![Join the chat at https://gitter.im/Reactive-Extensions/RxJS](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/Reactive-Extensions/RxJS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 # RxJS 8
diff --git a/packages/rxjs/package.json b/packages/rxjs/package.json
index 90c26e6051..e39797481c 100644
--- a/packages/rxjs/package.json
+++ b/packages/rxjs/package.json
@@ -119,6 +119,9 @@
     "url": "https://github.com/ReactiveX/RxJS/issues"
   },
   "homepage": "https://rxjs.dev",
+  "engines": {
+    "node": ">=20.19"
+  },
   "dependencies": {
     "@rxjs/observable": "8.0.0-alpha.14"
   },