diff --git a/.github/workflows/check_pypi_version.yml b/.github/workflows/check_pypi_version.yml
index ba99404d3..b383e87be 100644
--- a/.github/workflows/check_pypi_version.yml
+++ b/.github/workflows/check_pypi_version.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/ubuntu-tests.yml b/.github/workflows/ubuntu-tests.yml
index 632c03757..753470af0 100644
--- a/.github/workflows/ubuntu-tests.yml
+++ b/.github/workflows/ubuntu-tests.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - name: Check out repository
diff --git a/.github/workflows/windows-tests.yml b/.github/workflows/windows-tests.yml
index 21799563e..f79f84b66 100644
--- a/.github/workflows/windows-tests.yml
+++ b/.github/workflows/windows-tests.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - name: Check out repository
diff --git a/.github/workflows/windows_check_pypi_version.yml b/.github/workflows/windows_check_pypi_version.yml
index 960241326..6bd48fdf6 100644
--- a/.github/workflows/windows_check_pypi_version.yml
+++ b/.github/workflows/windows_check_pypi_version.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
     defaults:
       run:
         shell: pwsh # Use PowerShell for all run steps