diff --git a/lib/bundler/version.rb b/lib/bundler/version.rb
index 732b4a0563..ca7bb0719a 100644
--- a/lib/bundler/version.rb
+++ b/lib/bundler/version.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: false
 
 module Bundler
-  VERSION = "4.0.3".freeze
+  VERSION = "4.1.0.dev".freeze
 
   def self.bundler_major_version
     @bundler_major_version ||= gem_version.segments.first
diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 41b39a808b..b52dd1b9d3 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -9,7 +9,7 @@
 require "rbconfig"
 
 module Gem
-  VERSION = "4.0.3"
+  VERSION = "4.1.0.dev"
 end
 
 require_relative "rubygems/defaults"
diff --git a/spec/bundler/realworld/fixtures/tapioca/Gemfile.lock b/spec/bundler/realworld/fixtures/tapioca/Gemfile.lock
index 2db720a69f..4ce06de722 100644
--- a/spec/bundler/realworld/fixtures/tapioca/Gemfile.lock
+++ b/spec/bundler/realworld/fixtures/tapioca/Gemfile.lock
@@ -46,4 +46,4 @@ DEPENDENCIES
   tapioca
 
 BUNDLED WITH
-  4.0.3
+  4.1.0.dev
diff --git a/spec/bundler/realworld/fixtures/warbler/Gemfile.lock b/spec/bundler/realworld/fixtures/warbler/Gemfile.lock
index c37fbbb7ee..2f2deea994 100644
--- a/spec/bundler/realworld/fixtures/warbler/Gemfile.lock
+++ b/spec/bundler/realworld/fixtures/warbler/Gemfile.lock
@@ -36,4 +36,4 @@ DEPENDENCIES
   warbler!
 
 BUNDLED WITH
-  4.0.3
+  4.1.0.dev
diff --git a/tool/bundler/dev_gems.rb.lock b/tool/bundler/dev_gems.rb.lock
index fff9cfe70c..72abb0efcb 100644
--- a/tool/bundler/dev_gems.rb.lock
+++ b/tool/bundler/dev_gems.rb.lock
@@ -129,4 +129,4 @@ CHECKSUMS
   turbo_tests (2.2.5) sha256=3fa31497d12976d11ccc298add29107b92bda94a90d8a0a5783f06f05102509f
 
 BUNDLED WITH
-  4.0.3
+  4.1.0.dev
diff --git a/tool/bundler/rubocop_gems.rb.lock b/tool/bundler/rubocop_gems.rb.lock
index 70704bfc38..251abc37dd 100644
--- a/tool/bundler/rubocop_gems.rb.lock
+++ b/tool/bundler/rubocop_gems.rb.lock
@@ -156,4 +156,4 @@ CHECKSUMS
   unicode-emoji (4.1.0) sha256=4997d2d5df1ed4252f4830a9b6e86f932e2013fbff2182a9ce9ccabda4f325a5
 
 BUNDLED WITH
-  4.0.3
+  4.1.0.dev
diff --git a/tool/bundler/standard_gems.rb.lock b/tool/bundler/standard_gems.rb.lock
index 669e5492a8..1b48fe0582 100644
--- a/tool/bundler/standard_gems.rb.lock
+++ b/tool/bundler/standard_gems.rb.lock
@@ -176,4 +176,4 @@ CHECKSUMS
   unicode-emoji (4.1.0) sha256=4997d2d5df1ed4252f4830a9b6e86f932e2013fbff2182a9ce9ccabda4f325a5
 
 BUNDLED WITH
-  4.0.3
+  4.1.0.dev
diff --git a/tool/bundler/test_gems.rb.lock b/tool/bundler/test_gems.rb.lock
index d8f7d77122..6fb9d1c0c5 100644
--- a/tool/bundler/test_gems.rb.lock
+++ b/tool/bundler/test_gems.rb.lock
@@ -103,4 +103,4 @@ CHECKSUMS
   tilt (2.6.1) sha256=35a99bba2adf7c1e362f5b48f9b581cce4edfba98117e34696dde6d308d84770
 
 BUNDLED WITH
-  4.0.3
+  4.1.0.dev