diff --git a/.github/workflows/tox.yaml b/.github/workflows/tox.yaml
index 67c0209..40ca8d9 100644
--- a/.github/workflows/tox.yaml
+++ b/.github/workflows/tox.yaml
@@ -1,6 +1,6 @@
 name: Tox PR CI
 
-on: [pull_request, workflow_dispatch]
+on: [pull_request]
 
 jobs:
   build:
@@ -14,8 +14,8 @@ jobs:
         platform:
           - ubuntu-latest
         python-version:
+          - 3.7
           - 3.8
-          - 3.9
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index a04b218..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "files.associations": {
-        "*.yaml": "home-assistant"
-    }
-}
\ No newline at end of file
diff --git a/requirements_test.txt b/requirements_test.txt
index e65a9a5..d388fd6 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,9 +1,9 @@
 black==21.4b0
 codespell==2.0.0
 flake8==3.9.2
-mypy==0.910
+mypy==0.901
 pydocstyle==6.1.1
-cryptography==3.4.8
-pylint==2.11.1
+cryptography==3.2
+pylint==2.8.2
 pylint-strict-informational==0.1
-homeassistant==2021.11.2
+homeassistant==2021.1.4
\ No newline at end of file
diff --git a/tox.ini b/tox.ini
index 75c6e56..1c72213 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,13 +1,13 @@
 [tox]
 skipsdist = true
-envlist =  py{38,39}, lint, typing
+envlist =  py{37,38}, lint, typing
 skip_missing_interpreters = True
 cs_exclude_words = hass,unvalid
 
 [gh-actions]
 python =
+  3.7: clean, py37, lint, typing
   3.8: clean, py38, lint, typing
-  3.9: clean, py38, lint, typing
 
 [testenv]
 passenv = TOXENV CI
@@ -35,4 +35,4 @@ commands =
 
 [testenv:typing]
 commands =
-    mypy --ignore-missing-imports --follow-imports=skip custom_components
+    mypy --ignore-missing-imports --follow-imports=skip custom_components
\ No newline at end of file