diff --git a/Gemfile.lock b/Gemfile.lock
index 1ca7c2d31f..a0f1a0bae5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,7 +22,7 @@ GIT
 PATH
   remote: .
   specs:
-    rbs (4.1.1)
+    rbs (4.1.2.dev.1)
       logger
       prism (>= 1.6.0)
       tsort
diff --git a/lib/rbs/version.rb b/lib/rbs/version.rb
index 8434b91645..877e44f30d 100644
--- a/lib/rbs/version.rb
+++ b/lib/rbs/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RBS
-  VERSION = "4.1.1"
+  VERSION = "4.1.2.dev.1"
 end