diff --git a/Gemfile.lock b/Gemfile.lock
index 02dfe889..bdb17cd6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GIT
 PATH
   remote: .
   specs:
-    devise (4.8.1)
+    devise (4.9.0.alpha)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
       railties (>= 4.1.0)
diff --git a/lib/devise/version.rb b/lib/devise/version.rb
index ad9c7326..fb8f5d11 100644
--- a/lib/devise/version.rb
+++ b/lib/devise/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Devise
-  VERSION = "4.8.1".freeze
+  VERSION = "4.9.0.alpha".freeze
 end