diff --git a/date.gemspec b/date.gemspec
index 1a3ae81..cf07696 100644
--- a/date.gemspec
+++ b/date.gemspec
@@ -1,7 +1,12 @@
 # frozen_string_literal: true
+
+version = File.foreach(File.expand_path("../lib/date.rb", __FILE__)).find do |line|
+  /^\s*VERSION\s*=\s*["'](.*)["']/ =~ line and break $1
+end
+
 Gem::Specification.new do |s|
   s.name = "date"
-  s.version = '3.2.1'
+  s.version = version
   s.summary = "A subclass of Object includes Comparable module for handling dates."
   s.description = "A subclass of Object includes Comparable module for handling dates."
 
diff --git a/lib/date.rb b/lib/date.rb
index 4901219..c8fad9a 100644
--- a/lib/date.rb
+++ b/lib/date.rb
@@ -4,6 +4,7 @@
 require 'date_core'
 
 class Date
+  VERSION = '3.2.1' # :nodoc:
 
   def infinite?
     false