diff --git a/string_undump.gemspec b/string_undump.gemspec
index 36b7cf7..5f6d339 100644
--- a/string_undump.gemspec
+++ b/string_undump.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "string_undump"
-  spec.version       = '0.1.0'
+  spec.version       = '0.1.1'
   spec.authors       = ["Tadashi Saito"]
   spec.email         = ["tad.a.digger@gmail.com"]