diff --git a/lib/securerandom.gemspec b/lib/securerandom.gemspec
index b8f019f9ae..900713e7dc 100644
--- a/lib/securerandom.gemspec
+++ b/lib/securerandom.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
   spec.name          = "securerandom"
-  spec.version       = "0.1.1"
+  spec.version       = "0.2.0"
   spec.authors       = ["Tanaka Akira"]
   spec.email         = ["akr@fsij.org"]