diff --git a/custominstall.py b/custominstall.py
index 2adaaa5..c7de3ea 100644
--- a/custominstall.py
+++ b/custominstall.py
@@ -42,7 +42,7 @@ if is_windows:
 else:
     from os import statvfs
 
-CI_VERSION = '2.1'
+CI_VERSION = '2.1b1'
 
 # used to run the save3ds_fuse binary next to the script
 frozen = getattr(sys, 'frozen', False)