diff --git a/.github/workflows/status.yml b/.github/workflows/status.yml
index dfce628..db1a42a 100644
--- a/.github/workflows/status.yml
+++ b/.github/workflows/status.yml
@@ -15,9 +15,9 @@ jobs:
     steps:
       - uses: actions/checkout@v3.5.0
 
-      - uses: actions/setup-python@v4.6.0
+      - uses: actions/setup-python@v4.7.0
         with:
-          python-version: '3.11'
+          python-version-file: pyproject.toml
       
       - name: install
         run: pip install --user .
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index be6bec2..d15ec9a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,9 +11,9 @@ jobs:
     steps:
       - uses: actions/checkout@v3.5.2
 
-      - uses: actions/setup-python@v4.6.0
+      - uses: actions/setup-python@v4.7.0
         with:
-          python-version: '3.11'
+          python-version-file: pyproject.toml
 
       - name: install dev dependencies
         run: pip install --user .[dev]
diff --git a/pyproject.toml b/pyproject.toml
index 7415c8d..c405fba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,6 +8,8 @@ version = '0.0.0'
 dependencies = [
   'delb[https-loader]'
 ]
+requires-python = '>=3.9.0'
+
 
 [project.optional-dependencies]
 dev = [