diff --git a/README.md b/README.md
index 40e5f87..92b9f21 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ toml-rb
 
 A [TOML](https://github.com/toml-lang/toml) parser using [Citrus](http://mjackson.github.io/citrus) library.
 
-TOML specs supported: `0.5.0`
+TOML specs supported: `1.0.0`
 
 Installation
 ------------
diff --git a/lib/toml-rb/version.rb b/lib/toml-rb/version.rb
index 8a1b502..3783534 100644
--- a/lib/toml-rb/version.rb
+++ b/lib/toml-rb/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module TomlRB
-  VERSION = "2.1.2"
+  VERSION = "2.2.0"
 end