diff --git a/tests/unit/test_fmha_sm100.py b/tests/unit/test_fmha_sm100.py
index 9d1623c5..879719d8 100644
--- a/tests/unit/test_fmha_sm100.py
+++ b/tests/unit/test_fmha_sm100.py
@@ -30,7 +30,7 @@ print("=" * 60)
 
 nvcc_cmd = [
     "/usr/local/cuda-13.2/bin/nvcc",
-    "--std=c++17",
+    "--std=c++20",
     "-gencode=arch=compute_100a,code=sm_100a",
     f"-I{CUTLASS}/include",
     f"-I{REPO}",