diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b84a553..5654717 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,7 +36,7 @@ jobs:
         uses: actions/setup-python@v4
         id: python
         with:
-          python-version: '3.7'
+          python-version: '3.9'
 
       - name: Get pip cache dir
         id: pip-cache
diff --git a/mypy.ini b/mypy.ini
index 1a9998a..72cbfe5 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,7 +1,6 @@
 [mypy]
-python_version = 3.7
+python_version = 3.9
 show_error_codes = true
 
 strict = true
 warn_unreachable = true
-
diff --git a/setup.py b/setup.py
index 547d7e5..e574d6a 100644
--- a/setup.py
+++ b/setup.py
@@ -45,6 +45,6 @@ setup(
     include_package_data=True,
     zip_safe=False,
     install_requires=REQUIRES,
-    python_requires=">=3.7",
+    python_requires=">=3.9",
     test_suite="tests",
 )