diff --git a/.gitignore b/.gitignore
index 5dfc9c0..3fea40c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,5 @@ formulas/
 # we don't want to copy a real sfm.yaml file
 sfm.yaml
 
-# don't copy around python env files
-env/
+# don't copy around cached files
+__pycache__/