diff --git a/iso/builder/build-nccl-tests.sh b/iso/builder/build-nccl-tests.sh
index ce7161e..2e26060 100755
--- a/iso/builder/build-nccl-tests.sh
+++ b/iso/builder/build-nccl-tests.sh
@@ -96,11 +96,8 @@ SRC_DIR=$(ls -d nccl-tests-* 2>/dev/null | head -1)
 cd "$SRC_DIR"
 
 echo "=== building all_reduce_perf ==="
-# CUDA 13.0 dropped support for compute_60 (Pascal); target Volta+ only.
-GENCODE="-gencode=arch=compute_70,code=sm_70 \
-         -gencode=arch=compute_80,code=sm_80 \
-         -gencode=arch=compute_86,code=sm_86 \
-         -gencode=arch=compute_90,code=sm_90"
+# CUDA 13.0 supports only Hopper (sm_90) and newer.
+GENCODE="-gencode=arch=compute_90,code=sm_90"
 make MPI=0 \
     NVCC="$NVCC" \
     CUDA_HOME="$CUDA_HOME" \