diff --git a/.gitignore b/.gitignore
index 1952876..9bf1ee6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -247,3 +247,4 @@ grain_size_tools/saltykov.tsv
 grain_size_tools/Untitled2.ipynb
 grain_size_tools/Untitled.ipynb
 grain_size_tools/.jupyter/desktop-settings.json
+grain_size_tools/two_step_example.ipynb