diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..a77fccd
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,15 @@
+# Changelog
+
+## [v1.0.1](https://github.com/nisshiee/validation_examples_matcher/tree/v1.0.1)
+
+2016-01-31
+
+- NOTHING changed in production code
+- [[#6](https://github.com/nisshiee/validation_examples_matcher/pull/6)] Add README
+- [[#8](https://github.com/nisshiee/validation_examples_matcher/pull/8)] Mesure coverage
+
+## [v1.0.0](https://github.com/nisshiee/validation_examples_matcher/tree/v1.0.0)
+
+2016-01-26
+
+- First Release
diff --git a/README.md b/README.md
index e5ad2d9..be1a8e7 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,10 @@ RSpec.define MyModel do
 end
 ```
 
+## Changelog
+
+see [CHANGELOG.md](./CHANGELOG.md)
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/nisshiee/validation_examples_matcher.
diff --git a/lib/validation_examples_matcher/version.rb b/lib/validation_examples_matcher/version.rb
index c3a9afd..79aba2e 100644
--- a/lib/validation_examples_matcher/version.rb
+++ b/lib/validation_examples_matcher/version.rb
@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 module ValidationExamplesMatcher
-  VERSION = '1.0.0'
+  VERSION = '1.0.1'
 end