diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 23f90190..bbf5c389 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-latest]
         #os: [ubuntu-latest]
         #os: [windows-latest]
-        python-version: [3.13]
+        python-version: [3.12]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/quick_tests.yml b/.github/workflows/quick_tests.yml
index 8abc672b..99373ae5 100644
--- a/.github/workflows/quick_tests.yml
+++ b/.github/workflows/quick_tests.yml
@@ -13,7 +13,7 @@ jobs:
         os: [ubuntu-latest]
         #os: [ubuntu-latest]
         #os: [windows-latest]
-        python-version: [3.13]
+        python-version: [3.12]
 
     steps:
     - uses: actions/checkout@v4