diff --git a/CHANGELOG.md b/CHANGELOG.md
index 055001b1..6976a5f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## 1.1
 
+### 1.1.2
+- Check whether class responds to mobility_attribute?
+  ([#515](https://github.com/shioyama/mobility/pull/515))
+
 ### 1.1.1
 - Updated signing key
 
diff --git a/README.md b/README.md
index 56350353..f826d1b2 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Installation
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'mobility', '~> 1.1.1'
+gem 'mobility', '~> 1.1.2'
 ```
 
 ### ActiveRecord (Rails)
diff --git a/lib/mobility/version.rb b/lib/mobility/version.rb
index 84072f1a..a895730b 100644
--- a/lib/mobility/version.rb
+++ b/lib/mobility/version.rb
@@ -8,7 +8,7 @@ def self.gem_version
   module VERSION
     MAJOR = 1
     MINOR = 1
-    TINY = 1
+    TINY = 2
     PRE = nil
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")