diff --git a/Global/Cloud9.gitignore b/Global/Cloud9.gitignore
index b9f8a369..3f4384df 100644
--- a/Global/Cloud9.gitignore
+++ b/Global/Cloud9.gitignore
@@ -1,2 +1,3 @@
 # Cloud9 IDE - http://c9.io
 .c9revisions
+.c9