diff --git a/sgl-kernel/CMakeLists.txt b/sgl-kernel/CMakeLists.txt
index 72225e55b..aeefd3371 100644
--- a/sgl-kernel/CMakeLists.txt
+++ b/sgl-kernel/CMakeLists.txt
@@ -54,6 +54,9 @@ FetchContent_Populate(repo-cutlass)
 if("${CUDA_VERSION}" VERSION_EQUAL "12.8")
   set(DeepGEMM_REPO "https://github.com/sgl-project/DeepGEMM")
   set(DeepGEMM_TAG "blackwell")
+elseif("${CUDA_VERSION}" VERSION_EQUAL "12.9")
+  set(DeepGEMM_REPO "https://github.com/sgl-project/DeepGEMM")
+  set(DeepGEMM_TAG "blackwell")
 else()
   set(DeepGEMM_REPO "https://github.com/deepseek-ai/DeepGEMM")
   set(DeepGEMM_TAG "391755ada0ffefa9a6a52b6f14dcaf22d1a463e0")