diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ec1fd25d..97267593 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,12 +30,12 @@ jobs:
         sed -i 's/NO_ENERGY_SPEEDOMETER_USER/ENERGY_SPEEDOMETER_USER=\\"${{secrets.ENERGY_SPEEDOMETER_USER}}\\"/g' platformio.ini
         sed -i 's/NO_ENERGY_SPEEDOMETER_PASS/ENERGY_SPEEDOMETER_PASS=\\"${{secrets.ENERGY_SPEEDOMETER_PASS}}\\"/g' platformio.ini
     - name: Cache Python dependencies
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('platformio.ini') }}
     - name: Cache PlatformIO dependencies
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.pio/libdeps
         key: ${{ runner.os }}-pio-${{ hashFiles('platformio.ini') }}
@@ -50,7 +50,7 @@ jobs:
     - name: Set up node
       uses: actions/setup-node@v4
       with:
-        node-version: '16.x'
+        node-version: '22.x'
     - name: Build with node
       run: |
         cd lib/SvelteUi/app
diff --git a/.github/workflows/x-test-esp8266.yml b/.github/workflows/x-test-esp8266.yml
deleted file mode 100644
index 754d5763..00000000
--- a/.github/workflows/x-test-esp8266.yml
+++ /dev/null
@@ -1,63 +0,0 @@
-name: Test ESP8266
-
-on:
-  workflow_dispatch:
-
-jobs:
-  esp8266:
-    runs-on: esp8266
-    steps:
-    - uses: actions/checkout@v4
-    - name: Get commit hash
-      id: vars
-      run: echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
-    - name: Check outputs
-      run: echo ${{ steps.vars.outputs.sha_short }}
-    - name: Inject secrets into ini file
-      run: |
-        sed -i 's/NO_AMS2MQTT_PRICE_KEY/AMS2MQTT_PRICE_KEY="${{secrets.AMS2MQTT_PRICE_KEY}}"/g' platformio.ini
-        sed -i 's/NO_AMS2MQTT_PRICE_AUTHENTICATION/AMS2MQTT_PRICE_AUTHENTICATION="${{secrets.AMS2MQTT_PRICE_AUTHENTICATION}}"/g' platformio.ini
-        sed -i 's/NO_ENERGY_SPEEDOMETER_USER/ENERGY_SPEEDOMETER_USER=\\"${{secrets.ENERGY_SPEEDOMETER_USER}}\\"/g' platformio.ini
-        sed -i 's/NO_ENERGY_SPEEDOMETER_PASS/ENERGY_SPEEDOMETER_PASS=\\"${{secrets.ENERGY_SPEEDOMETER_PASS}}\\"/g' platformio.ini
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install -U platformio css_html_js_minify
-    - name: Set up node
-      uses: actions/setup-node@v4
-      with:
-        node-version: '16.x'
-    - name: Configure PlatformIO environment
-      run: |
-        echo "[platformio]
-        default_envs = dev8266
-
-        [env:dev8266]
-        platform = espressif8266@4.2.0
-        framework = arduino
-        board = esp12e
-        board_build.ldscript = eagle.flash.4m2m.ld
-        build_flags = \${common.build_flags}
-        lib_ldf_mode = off
-        lib_compat_mode = off
-        lib_deps = ESP8266WiFi, ESP8266mDNS, ESP8266WebServer, ESP8266HTTPClient, ESP8266httpUpdate, ESP8266SSDP, \${common.lib_deps}
-        lib_ignore = \${common.lib_ignore}
-        extra_scripts = \${common.extra_scripts}" > platformio-user.ini
-    - name: Build with node
-      run: |
-        cd lib/SvelteUi/app
-        npm ci
-        npm run build
-        cd -
-      env:
-        CI: true
-    - name: PlatformIO lib install
-      run: pio pkg update
-    - name: PlatformIO run
-      run: pio run -t upload --upload-port /dev/ttyUSB0
-    - name: Wait for device to come online
-      run: waitforhost 10.42.0.11 80
-    - name: Confirm version
-      run: curl -s http://10.42.0.11/sysinfo.json|jq -r .version | grep "${{ steps.vars.outputs.sha_short }}" || exit 1
-    - name: Running amsreader-test
-      run: amsreader-test 10.42.0.11