diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 756d062..7b514f4 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -2,15 +2,32 @@ name: Pull Request CI
 
 on:
   pull_request:
-    branches: [ "main" ]
+    branches: develop
 
 jobs:
-  test_oslg:
-    runs-on: ubuntu-22.04
+  test_oslg_ubuntu_latest:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.x"]
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: python -m pip install --upgrade pip setuptools wheel
+      - name: Run unit tests
+        run: python -m unittest
 
+  test_oslg_ubuntu_2204:
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
-        python-version: [3.2, 3.5, 3.10]
+        python-version: ["3.10", "3.x"]
 
     steps:
       - name: Check out repository
@@ -18,8 +35,8 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python-version }
+          python-version: ${{ matrix.python-version }}
       - name: Install dependencies
         run: python -m pip install --upgrade pip setuptools wheel
       - name: Run unit tests
-        run: python -m unittest discover -s ./tests
+        run: python -m unittest
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
deleted file mode 100644
index 4bbc1f5..0000000
--- a/.github/workflows/python-package.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-name: Python package
-
-on:
-  pull_request:
-    branches: [ "main" ]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: ["3.10"]
-
-    steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Test with pytest
-      run: |
-        python -m unittest
diff --git a/.gitignore b/.gitignore
index b6e4761..7b9468e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,8 @@ __pycache__/
 # C extensions
 *.so
 
+.DS_Store
+
 # Distribution / packaging
 .Python
 build/
diff --git a/pyproject.toml b/pyproject.toml
index 06353b9..294a44e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ readme = "README.md"
 license = "BSD-3-Clause"
 license-files = ["LICENSE"]
 classifiers = [
-    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.2",
     "Intended Audience :: Developers",
     "Topic :: Software Development :: Libraries :: Python Modules",
     "Operating System :: OS Independent",