diff --git a/.github/workflows/hassfest.yml b/.github/workflows/hassfest.yml
index 78e94d3..e261734 100644
--- a/.github/workflows/hassfest.yml
+++ b/.github/workflows/hassfest.yml
@@ -20,6 +20,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Run hassfest
         uses: home-assistant/actions/hassfest@master
diff --git a/.github/workflows/precommit.yml b/.github/workflows/precommit.yml
index f5933ed..9dfe140 100644
--- a/.github/workflows/precommit.yml
+++ b/.github/workflows/precommit.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index b874a63..cc17793 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/release-versioning.yml b/.github/workflows/release-versioning.yml
index b70ab52..f5e97d9 100644
--- a/.github/workflows/release-versioning.yml
+++ b/.github/workflows/release-versioning.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           ref: main
@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Create GitHub Release from tag
         uses: softprops/action-gh-release@v2
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 80d4572..75ea114 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Get version
         id: version
diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..01daf2a
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+ha-env
diff --git a/custom_components/simple_pid_controller/sensor.py b/custom_components/simple_pid_controller/sensor.py
index c3d315f..73f57ec 100644
--- a/custom_components/simple_pid_controller/sensor.py
+++ b/custom_components/simple_pid_controller/sensor.py
@@ -239,7 +239,7 @@ def __init__(
 
         BasePIDEntity.__init__(self, hass, entry, key, name)
 
-        self._attr_native_unit_of_measurement = "%"
+        self._attr_native_unit_of_measurement = None
         self._attr_state_class = SensorStateClass.MEASUREMENT
 
     async def async_added_to_hass(self):