diff --git a/8086_sim/.gitignore b/8086_sim/.gitignore
index b28fd9b..0916687 100644
--- a/8086_sim/.gitignore
+++ b/8086_sim/.gitignore
@@ -1,3 +1,4 @@
+sim86
 listing_0043_immediate_movs
 listing_0044_register_movs
 listing_0045_challenge_register_movs