diff --git a/test_run_all.py b/test_run_all.py
index 2709a98..367f265 100644
--- a/test_run_all.py
+++ b/test_run_all.py
@@ -14,7 +14,7 @@ def run_test(filename):
         raise ValueError(f"filename `{filename}` is not a Python (.py) file")
     module = f"ft_utils.tests.{f_head}"
     result = subprocess.run(
-        ["python", "-m", module], stdout=subprocess.PIPE, stderr=subprocess.PIPE
+        [sys.executable, "-m", module], stdout=subprocess.PIPE, stderr=subprocess.PIPE
     )
     if result.returncode != 0:
         print(f"{module} failed:")