diff --git a/lib/time.gemspec b/lib/time.gemspec
index 214c0cf4c2..ce5f76f8e9 100644
--- a/lib/time.gemspec
+++ b/lib/time.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "time"
-  spec.version       = "0.2.1"
+  spec.version       = "0.2.2"
   spec.authors       = ["Tanaka Akira"]
   spec.email         = ["akr@fsij.org"]