diff --git a/lib/saxlsx/version.rb b/lib/saxlsx/version.rb
index facd418..9ed2b94 100644
--- a/lib/saxlsx/version.rb
+++ b/lib/saxlsx/version.rb
@@ -1,3 +1,3 @@
 module Saxlsx
-  VERSION = '1.3.1'
+  VERSION = '1.4.0'
 end