diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 47c598f..ed5801d 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -9,7 +9,7 @@ jobs:
   build_wheels:
     strategy:
       matrix:
-        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        os: ["ubuntu-24.04", "windows-latest", "macos-latest"]
     runs-on: ${{ matrix.os }}
     name: Build wheels on ${{ matrix.os }}
 
@@ -50,7 +50,7 @@ jobs:
 
           CIBW_ARCHS_LINUX: auto aarch64
           CIBW_ARCHS_MACOS: x86_64 universal2 arm64
-          CIBW_SKIP: pp* cp36-* cp37-* cp38-*
+          CIBW_SKIP: pp* cp36-* cp37-* cp38-* cp39-*
 
       - name: Upload Wheels to artifact
         uses: actions/upload-artifact@v4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4c40b05..7b5d2a7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,8 +8,8 @@ jobs:
   test:
     strategy:
       matrix:
-        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
-        py: ["3.14-dev", "3.13", "3.12", "3.11", "3.10", "3.9"]
+        os: ["ubuntu-24.04", "windows-latest", "macos-latest"]
+        py: ["3.14-dev", "3.13", "3.12", "3.11", "3.10"]
 
     runs-on: ${{ matrix.os }}
     name: Run test with Python ${{ matrix.py }} on ${{ matrix.os }}