diff --git a/.github/workflows/testcext.yml b/.github/workflows/testcext.yml
index cdbbb1936..1a0fbabae 100644
--- a/.github/workflows/testcext.yml
+++ b/.github/workflows/testcext.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12-dev']
 
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 730d66eb0..d519d0e91 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', 'pypy-3.9']
+        python-version: ['3.9', '3.10', '3.11', '3.12-dev', 'pypy-3.9']
 
     steps:
     - uses: actions/checkout@v3