diff --git a/.github/workflows/test-and-release.yml b/.github/workflows/test-and-release.yml
index f85202d..c23906c 100644
--- a/.github/workflows/test-and-release.yml
+++ b/.github/workflows/test-and-release.yml
@@ -58,7 +58,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node-version: [18.x, 20.x, 22.x, 24.x]
+        node-version: [20.x, 22.x, 24.x]
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
diff --git a/README.md b/README.md
index 980cf84..a053cd3 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,7 @@ More description could be found [here](https://github.com/ioBroker/ioBroker.s7/b
 ## Changelog
 
 ### **WORK IN PROGRESS**
+- (iobroker-bot) Adapter requires node.js >= 20 now.
 * IMPORTANT: js-controller 5+ is required to install this version!
 
 ### 1.5.0 (2025-08-25)
diff --git a/package.json b/package.json
index 001d358..d1a121b 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "url": "https://github.com/ioBroker/ioBroker.s7"
   },
   "engines": {
-    "node": ">=18"
+    "node": ">=20"
   },
   "optionalDependencies": {},
   "dependencies": {