diff --git a/.gitignore b/.gitignore
index e30a155b..98042836 100644
--- a/.gitignore
+++ b/.gitignore
@@ -88,3 +88,6 @@ openflexure_settings/
 # Files created by test utilities
 /tests/utilities/*.pstats
 /tests/utilities/*.png
+
+# Files created by simulator
+openflexure/
\ No newline at end of file