diff --git a/.gitignore b/.gitignore
index 91d48bf..12c21aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,7 @@ dist
 abstract_python_ip_geolocation.egg-info
 dev_test.py
 .vscode
-*.history
\ No newline at end of file
+*.history
+# Demo / scratch notebooks must not be committed.
+*.ipynb
+.ipynb_checkpoints/