diff --git a/lib/geminabox/version.rb b/lib/geminabox/version.rb
index 21ba6f57..38644b7c 100644
--- a/lib/geminabox/version.rb
+++ b/lib/geminabox/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Geminabox
-  VERSION = '2.1.0.pre' unless defined? VERSION
+  VERSION = '2.1.0.rc.1' unless defined? VERSION
 end