diff --git a/.github/workflows/nightly_build.yml b/.github/workflows/nightly_build.yml
index 7887bd92d..70f0c21b4 100644
--- a/.github/workflows/nightly_build.yml
+++ b/.github/workflows/nightly_build.yml
@@ -145,7 +145,7 @@ jobs:
     needs: create-nightly-tag
     uses: ./.github/workflows/python_test.yml
     with:
-      python-versions: '["3.10", "3.11", "3.12", "3.13"]'
+      python-versions: '["3.10", "3.11", "3.12"]'
 
   # Not making nightly builds dependent on integration test success
   # due to inherent flakiness of 3rd party integrations
diff --git a/.github/workflows/python_test.yml b/.github/workflows/python_test.yml
index 3d6fbb47f..d97665999 100644
--- a/.github/workflows/python_test.yml
+++ b/.github/workflows/python_test.yml
@@ -37,7 +37,7 @@ jobs:
       UV_CACHE_DIR: /tmp/.uv-cache
     strategy:
       matrix:
-        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12", "3.13"]' ) }}
+        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12"]' ) }}
         splitCount: [5]
         group: [1, 2, 3, 4, 5]
     steps:
@@ -81,7 +81,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12", "3.13"]' ) }}
+        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12"]' ) }}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -114,7 +114,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12", "3.13"]') }}
+        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12"]') }}
     steps:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v4