diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 844b8a6..181e186 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -11,6 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
       - name: Checkout repository
@@ -19,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.x
+          python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
         run: |
diff --git a/pyproject.toml b/pyproject.toml
index 0ea9534..0b81a56 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,6 @@ classifiers = [
     "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
     'Programming Language :: Python',
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",