diff --git a/.gitignore b/.gitignore
index 89f06dd..be40251 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+prebuilt
 system/clearpilot/dev/reverse_ssh
 system/clearpilot/dev/id_rsa
 system/clearpilot/dev/id_rsa.pub