diff --git a/.github/workflows/pr-test-sgl-kernel.yml b/.github/workflows/pr-test-sgl-kernel.yml
index 26b921eee..65e452369 100644
--- a/.github/workflows/pr-test-sgl-kernel.yml
+++ b/.github/workflows/pr-test-sgl-kernel.yml
@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10']
+        python-version: ['3.9']
         cuda-version: ['12.4']
 
     steps:
diff --git a/.github/workflows/release-pypi-kernel.yml b/.github/workflows/release-pypi-kernel.yml
index c07069c5d..af34c8423 100644
--- a/.github/workflows/release-pypi-kernel.yml
+++ b/.github/workflows/release-pypi-kernel.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9']
         cuda-version: ['12.4']
 
     steps:
diff --git a/.github/workflows/release-whl-kernel.yml b/.github/workflows/release-whl-kernel.yml
index 08a820c2a..70c451778 100644
--- a/.github/workflows/release-whl-kernel.yml
+++ b/.github/workflows/release-whl-kernel.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9']
         cuda-version: ['11.8']
 
     steps: