diff --git a/Gemfile.lock b/Gemfile.lock
index 7e2212b3..07936bc0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    jpostcode (1.0.0.20240401)
+    jpostcode (1.0.0.20240601)
 
 GEM
   remote: https://rubygems.org/
diff --git a/lib/jpostcode/version.rb b/lib/jpostcode/version.rb
index cadc843f..7454f4d8 100644
--- a/lib/jpostcode/version.rb
+++ b/lib/jpostcode/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Jpostcode
-  VERSION = '1.0.0.20240401'
+  VERSION = '1.0.0.20240601'
 end