diff --git a/.gitignore b/.gitignore
index 4a610ba1..586997a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.swp
 *.pmc
+*.bc
 .STD_build_stamp
 .STD_checkout_stamp
 STD_checkout