diff --git a/.gitignore b/.gitignore
index c0c9dcae0..cf65b6b60 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,7 +36,8 @@ package-lock.json
 .env
 __pycache__
 
-ci/
+# File auto-generated by the lattice-estimator from lattice_estimator.sage
+ci/lattice_estimator.sage.py
 
 # In case someone clones the lattice-estimator locally to verify security
 /lattice-estimator