diff --git a/ext/nkf/nkf.gemspec b/ext/nkf/nkf.gemspec
index 23f1dcdbaf..2d77c71ff8 100644
--- a/ext/nkf/nkf.gemspec
+++ b/ext/nkf/nkf.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "nkf"
-  spec.version       = "0.1.0"
+  spec.version       = "0.1.1"
   spec.authors       = ["NARUSE Yui"]
   spec.email         = ["naruse@airemix.jp"]