diff --git a/.github/workflows/test_gdal_latest.yml b/.github/workflows/test_gdal_latest.yml
index b742776f..86710e7f 100644
--- a/.github/workflows/test_gdal_latest.yml
+++ b/.github/workflows/test_gdal_latest.yml
@@ -21,13 +21,13 @@ jobs:
   test_gdal_latest:
     name: GDAL Latest
     runs-on: ubuntu-latest
-    container: osgeo/proj:9.1.0
+    container: osgeo/proj:9.2.0
     env:
       GDAL_DIR: ${{ github.workspace }}/gdal_install
       GDAL_DATA: ${{ github.workspace }}/gdal_install/share/gdal
       LD_LIBRARY_PATH: "${{ github.workspace }}/gdal_install/lib/:${LD_LIBRARY_PATH}"
     steps:
-      - uses: actions/checkout@v4.1.3
+      - uses: actions/checkout@v4
       - name: Update
         run: |
           apt-get update
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1d7f8eea..2ad82e77 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -39,6 +39,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        python-version: ['3.9', '3.10', '3.11', '3.12']
+        gdal-version: ['3.9.3']
         include:
           - python-version: '3.8'
             gdal-version: '3.4.3'
@@ -49,10 +51,12 @@ jobs:
           - python-version: '3.11'
             gdal-version: '3.7.3'
           - python-version: '3.12'
-            gdal-version: '3.8.3'
+            gdal-version: '3.8.4'
+          - python-version: '3.12'
+            gdal-version: '3.9.3'
 
     steps:
-      - uses: actions/checkout@v4.1.3
+      - uses: actions/checkout@v4
 
       - name: Update
         run: |
@@ -91,65 +95,66 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
+        os: [macos-13, macos-14]
+        python-version: ['3.9', '3.10', '3.11', '3.12']
         include:
-          - os: macos-13
-            python-version: '3.12'
-          - os: macos-14
-            python-version: '3.12'
+          - os: ubuntu-latest
+            python-version: '*'
           - os: windows-latest
             python-version: '3.12'
     steps:
       - uses: actions/checkout@v4
 
-      - name: Conda Setup
-        uses: conda-incubator/setup-miniconda@v3
+      - name: Setup Conda
+        uses: mamba-org/setup-micromamba@v1
         with:
-          miniforge-variant: Mambaforge
-          miniforge-version: latest
-          use-mamba: true
-          auto-update-conda: true
-          use-only-tar-bz2: false
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install Env (OSX)
-        if: matrix.os == 'macos-13' || matrix.os == 'macos-14'
+          micromamba-version: '1.5.10-0'
+          init-shell: >-
+            bash
+            powershell
+          environment-name: test
+          create-args: >-
+            python=${{ matrix.python-version }}
+            libgdal=3.9
+            geos>=3.12
+            cython=3
+            numpy
+
+      - name: Install Env
+        if: matrix.os != 'windows-latest'
         shell: bash -l {0}
         run: |
-          conda config --prepend channels conda-forge
-          conda config --set channel_priority strict
-          conda create -n test python=${{ matrix.python-version }} libgdal geos=3.12 cython=3
-          conda activate test
-          python -m pip install -e . || python -m pip install -e .
-          python -m pip install -r requirements-dev.txt
+          micromamba run -n test python -m pip install -e . --no-use-pep517 || micromamba run -n test python -m pip install -e .
+          micromamba run -n test python -m pip install -r requirements-dev.txt
 
       - name: Install Env (Windows)
         if: matrix.os == 'windows-latest'
         shell: bash -l {0}
         run: |
-          conda config --prepend channels conda-forge
-          conda config --set channel_priority strict
-          conda create -n test python=${{ matrix.python-version }} libgdal geos=3.12 cython=3
-          conda activate test
-          GDAL_VERSION="3.7" python setup.py build_ext -I"/c/Users/runneradmin/miniconda3/envs/test/Library/include" -lgdal -L"/c/Users/runneradmin/miniconda3/envs/test/Library/lib" install
-          python -m pip install -r requirements-dev.txt
+          GDAL_VERSION="3.9.3" micromamba run -n test python setup.py build_ext -I"$MAMBA_ROOT_PREFIX/envs/test/Library/include" -lgdal -L"$MAMBA_ROOT_PREFIX/envs/test/Library/lib" install
+          micromamba run -n test python -m pip install -r requirements-dev.txt
+          rm -rf fiona
 
       - name: Check and Log Environment
         shell: bash -l {0}
         run: |
-          conda activate test
-          python -V
-          conda info
+          micromamba run -n test python -V
+          micromamba info
+
+      - name: Test with Coverage (Ubuntu)
+        if: matrix.os == 'ubuntu-latest'
+        shell: bash -l {0}
+        run: |
+          micromamba run -n test python -m pytest -v -m "not wheel" -rxXs --cov fiona --cov-report term-missing
 
       - name: Test with Coverage (Windows)
         if: matrix.os == 'windows-latest'
         shell: bash -l {0}
         run: |
-          conda activate test
-          pytest -v -m "not wheel" -rxXs --cov fiona --cov-report term-missing
+          micromamba run -n test python -m pytest -v -m "not wheel" -rxXs --cov fiona --cov-report term-missing
 
       - name: Test with Coverage (OSX)
-        if: matrix.os == 'macos-13'
+        if: "${{matrix.os}} == 'macos-13' || ${{matrix.os}} == 'macos-14'"
         shell: bash -l {0}
         run: |
-          conda activate test
-          python -m pytest -v -m "not wheel" -rxXs  --cov fiona --cov-report term-missing
+          micromamba run -n test python -m pytest -v -m "not wheel" -rxXs --cov fiona --cov-report term-missing
diff --git a/pytest.ini b/pytest.ini
index 522b93d8..373fc095 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,6 +1,7 @@
 [pytest]
 filterwarnings =
     error
+    ignore:.*Plugin file tracers.*
     ignore:.*Sequential read of iterator was interrupted*:RuntimeWarning
     ignore:.*negative slices or start values other than zero may be slow*:RuntimeWarning
     ignore:.*negative step size may be slow*:RuntimeWarning