diff --git a/.github/scripts/install-cuda-aarch64.sh b/.github/scripts/install-cuda-aarch64.sh
index 710878a1b3..536a90249e 100755
--- a/.github/scripts/install-cuda-aarch64.sh
+++ b/.github/scripts/install-cuda-aarch64.sh
@@ -12,7 +12,9 @@ install_cuda_aarch64() {
     # nccl version must match libtorch_cuda.so was built with
     if [[ ${CU_VERSION:0:4} == "cu12" ]]; then
         # cu12: https://github.com/pytorch/pytorch/blob/main/.ci/docker/ci_commit_pins/nccl-cu12.txt
-        if [[ ${CU_VERSION} == "cu128" ]]; then
+        if [[ ${CU_VERSION} == "cu129" ]]; then
+            nccl_version="2.27.5-1"
+        elif [[ ${CU_VERSION} == "cu128" ]]; then
             nccl_version="2.26.2-1"
         elif [[ ${CU_VERSION} == "cu126" ]]; then
             nccl_version="2.24.3-1"