diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index ba7b37442..636d4efba 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/vscode/devcontainers/python:0-3.7
+FROM mcr.microsoft.com/vscode/devcontainers/python:0-3.8
 
 WORKDIR /workspaces
 
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index f6dba9204..d4288dde6 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -16,7 +16,7 @@
     "python.linting.pylintEnabled": true,
     "python.linting.enabled": true,
     "python.formatting.provider": "black",
-    "python.formatting.blackArgs": ["--target-version", "py37"],
+    "python.formatting.blackArgs": ["--target-version", "py38"],
     "editor.formatOnPaste": false,
     "editor.formatOnSave": true,
     "editor.formatOnType": true,
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 371218b10..b6cd3058b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -89,7 +89,7 @@ jobs:
       - name: Run black
         run: |
           . venv/bin/activate
-          black --target-version py37 --check supervisor tests setup.py
+          black --target-version py38 --check supervisor tests setup.py
 
   lint-dockerfile:
     name: Check Dockerfile
@@ -345,7 +345,7 @@ jobs:
     needs: prepare
     strategy:
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.8]
     name: Run tests Python ${{ matrix.python-version }}
     steps:
       - name: Check out code from GitHub
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
new file mode 100644
index 000000000..e627dfd3c
--- /dev/null
+++ b/.github/workflows/release-drafter.yml
@@ -0,0 +1,15 @@
+name: Release Drafter
+
+on:
+  push:
+    # branches to consider in the event; optional, defaults to all
+    branches:
+      - master
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/release-drafter@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/azure-pipelines-ci.yml b/azure-pipelines-ci.yml
index 03e97dcc4..5db93f9e0 100644
--- a/azure-pipelines-ci.yml
+++ b/azure-pipelines-ci.yml
@@ -22,9 +22,9 @@ jobs:
           sudo apt-get install -y libpulse0 libudev1
         displayName: "Install Host library"
       - task: UsePythonVersion@0
-        displayName: "Use Python 3.7"
+        displayName: "Use Python 3.8"
         inputs:
-          versionSpec: "3.7"
+          versionSpec: "3.8"
       - script: pip install tox
         displayName: "Install Tox"
       - script: tox
diff --git a/azure-pipelines-release.yml b/azure-pipelines-release.yml
index ee44522f1..5dccfc276 100644
--- a/azure-pipelines-release.yml
+++ b/azure-pipelines-release.yml
@@ -20,9 +20,9 @@ jobs:
       vmImage: "ubuntu-latest"
     steps:
       - task: UsePythonVersion@0
-        displayName: "Use Python 3.7"
+        displayName: "Use Python 3.8"
         inputs:
-          versionSpec: "3.7"
+          versionSpec: "3.8"
       - script: |
           setup_version="$(python setup.py -V)"
           branch_version="$(Build.SourceBranchName)"
diff --git a/azure-pipelines-wheels.yml b/azure-pipelines-wheels.yml
index ba0bab474..257c2abfe 100644
--- a/azure-pipelines-wheels.yml
+++ b/azure-pipelines-wheels.yml
@@ -8,7 +8,7 @@ trigger:
 pr: none
 variables:
   - name: versionWheels
-    value: '1.6.1-3.7-alpine3.11'
+    value: '1.13.0-3.8-alpine3.12'
 resources:
   repositories:
     - repository: azure
diff --git a/build.json b/build.json
index 5dca29692..b46db3345 100644
--- a/build.json
+++ b/build.json
@@ -1,11 +1,11 @@
 {
   "image": "homeassistant/{arch}-hassio-supervisor",
   "build_from": {
-    "aarch64": "homeassistant/aarch64-base-python:3.7-alpine3.11",
-    "armhf": "homeassistant/armhf-base-python:3.7-alpine3.11",
-    "armv7": "homeassistant/armv7-base-python:3.7-alpine3.11",
-    "amd64": "homeassistant/amd64-base-python:3.7-alpine3.11",
-    "i386": "homeassistant/i386-base-python:3.7-alpine3.11"
+    "aarch64": "homeassistant/aarch64-base-python:3.8-alpine3.12",
+    "armhf": "homeassistant/armhf-base-python:3.8-alpine3.12",
+    "armv7": "homeassistant/armv7-base-python:3.8-alpine3.12",
+    "amd64": "homeassistant/amd64-base-python:3.8-alpine3.12",
+    "i386": "homeassistant/i386-base-python:3.8-alpine3.12"
   },
   "labels": {
     "io.hass.type": "supervisor"
diff --git a/setup.py b/setup.py
index 200196eea..981e3718b 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@ setup(
         "Topic :: Scientific/Engineering :: Atmospheric Science",
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
-        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
     ],
     keywords=["docker", "home-assistant", "api"],
     zip_safe=False,
diff --git a/tests/common.py b/tests/common.py
index eed83c84d..c432bc037 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -7,20 +7,3 @@ def load_json_fixture(filename):
     """Load a fixture."""
     path = Path(Path(__file__).parent.joinpath("fixtures"), filename)
     return json.loads(path.read_text())
-
-
-def mock_coro(return_value=None, exception=None):
-    """Return a coro that returns a value or raise an exception."""
-    return mock_coro_func(return_value, exception)()
-
-
-def mock_coro_func(return_value=None, exception=None):
-    """Return a method to create a coro function that returns a value."""
-
-    async def coro(*args, **kwargs):
-        """Fake coroutine."""
-        if exception:
-            raise exception
-        return return_value
-
-    return coro
diff --git a/tests/conftest.py b/tests/conftest.py
index 7f86bc445..c231ff8d2 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -5,8 +5,6 @@ import pytest
 
 from supervisor.bootstrap import initialize_coresys
 
-from tests.common import mock_coro
-
 # pylint: disable=redefined-outer-name
 
 
@@ -21,8 +19,7 @@ def docker():
 async def coresys(loop, docker):
     """Create a CoreSys Mock."""
     with patch("supervisor.bootstrap.initialize_system_data"), patch(
-        "supervisor.bootstrap.fetch_timezone",
-        return_value=mock_coro(return_value="Europe/Zurich"),
+        "supervisor.bootstrap.fetch_timezone", return_value="Europe/Zurich",
     ):
         coresys_obj = await initialize_coresys()
 
diff --git a/tests/test_validate.py b/tests/test_validate.py
index e4030f873..641786ba4 100644
--- a/tests/test_validate.py
+++ b/tests/test_validate.py
@@ -24,23 +24,23 @@ async def test_dns_url_v4_good():
         assert supervisor.validate.dns_url(url)
 
 
-async def test_dns_url_v6_good():
+def test_dns_url_v6_good():
     """Test the DNS validator with known-good ipv6 DNS URLs."""
     for url in GOOD_V6:
         assert supervisor.validate.dns_url(url)
 
 
-async def test_dns_server_list_v4():
+def test_dns_server_list_v4():
     """Test a list with v4 addresses."""
     assert supervisor.validate.dns_server_list(GOOD_V4)
 
 
-async def test_dns_server_list_v6():
+def test_dns_server_list_v6():
     """Test a list with v6 addresses."""
     assert supervisor.validate.dns_server_list(GOOD_V6)
 
 
-async def test_dns_server_list_combined():
+def test_dns_server_list_combined():
     """Test a list with both v4 and v6 addresses."""
     combined = GOOD_V4 + GOOD_V6
     # test the matches
@@ -52,14 +52,14 @@ async def test_dns_server_list_combined():
         supervisor.validate.dns_server_list(combined + combined + combined + combined)
 
 
-async def test_dns_server_list_bad():
+def test_dns_server_list_bad():
     """Test the bad list."""
     # test the matches
     with pytest.raises(voluptuous.error.Invalid):
         assert supervisor.validate.dns_server_list(BAD)
 
 
-async def test_dns_server_list_bad_combined():
+def test_dns_server_list_bad_combined():
     """Test the bad list, combined with the good."""
     combined = GOOD_V4 + GOOD_V6 + BAD
 
diff --git a/tox.ini b/tox.ini
index 2c75c7579..3ff0c7fdb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,4 +21,4 @@ commands =
 [testenv:black]
 basepython = python3
 commands =
-    black --target-version py37 --check supervisor tests setup.py
+    black --target-version py38 --check supervisor tests setup.py