diff --git a/.gitignore b/.gitignore
index 3fea40c..aef93fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,6 @@ formulas/
 # we don't want to copy a real sfm.yaml file
 sfm.yaml
 
-# don't copy around cached files
+# don't copy around cached/compiled files
 __pycache__/
+*.pyc