diff --git a/.gitignore b/.gitignore
index 1277aaf5..3688c36b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -73,3 +73,5 @@ examples/global-lunar-bombardment/scale.ipynb
 python/ctem/ctem.egg-info/
 
 .idea
+
+*.i90