diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 265a95e..857d1fc 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -11,19 +11,19 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  package:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Set up Python 3.10
-        uses: actions/setup-python@v4
-        with:
-          python-version: "3.10"
-          cache: "pip"
-          cache-dependency-path: "**/pyproject.toml"
-      - name: Install build dependencies
-        run: python -m pip install --upgrade pip wheel twine build
-      - name: Build package
-        run: python -m build
-      - name: Check package
-        run: twine check --strict dist/*.whl
+    package:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+            - name: Set up Python 3.9
+              uses: actions/setup-python@v4
+              with:
+                  python-version: "3.9"
+                  cache: "pip"
+                  cache-dependency-path: "**/pyproject.toml"
+            - name: Install build dependencies
+              run: python -m pip install --upgrade pip wheel twine build
+            - name: Build package
+              run: python -m build
+            - name: Check package
+              run: twine check --strict dist/*.whl
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index e297595..a1eb749 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -20,7 +20,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                python: ["3.10"]
+                python: ["3.9"]
                 os: [ubuntu-latest]
 
         env: