diff --git a/Gemfile.lock b/Gemfile.lock
index 4d9c6bc..4fea4ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    text_chart (0.1.0)
+    text_chart (1.0.0)
 
 GEM
   remote: https://rubygems.org/
diff --git a/lib/text_chart/version.rb b/lib/text_chart/version.rb
index 69f71fb..f8d5791 100644
--- a/lib/text_chart/version.rb
+++ b/lib/text_chart/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 class TextChart
-  VERSION = "0.1.0"
+  VERSION = "1.0.0"
 end