diff --git a/extra_tests/.gitignore b/extra_tests/.gitignore
index 776e3b786..28ddac584 100644
--- a/extra_tests/.gitignore
+++ b/extra_tests/.gitignore
@@ -2,3 +2,4 @@ snippets/whats_left_*.py
 .cache/
 cpython_tests_results.json
 cpython_generated_slices.py
+Pipfile.lock