---
 libcst/codegen/generate.py               |    2 +-
 libcst/codemod/tests/test_codemod_cli.py |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

--- a/libcst/codegen/generate.py
+++ b/libcst/codegen/generate.py
@@ -69,7 +69,7 @@ def codegen_visitors() -> None:
         # by attempting to run codegen again in a new process.
         with open(os.devnull, "w") as devnull:
             subprocess.check_call(
-                ["python3", "-m", "libcst.codegen.gen_visitor_functions"],
+                [sys.executable, "-m", "libcst.codegen.gen_visitor_functions"],
                 cwd=base,
                 stdout=devnull,
             )
--- a/libcst/codemod/tests/test_codemod_cli.py
+++ b/libcst/codemod/tests/test_codemod_cli.py
@@ -4,7 +4,7 @@
 # LICENSE file in the root directory of this source tree.
 #
 
-
+import sys
 import subprocess
 from pathlib import Path
 
@@ -16,7 +16,7 @@ class TestCodemodCLI(UnitTest):
     def test_codemod_formatter_error_input(self) -> None:
         rlt = subprocess.run(
             [
-                "python",
+                sys.executable,
                 "-m",
                 "libcst.tool",
                 "codemod",