diff --git a/CHANGELOG.md b/CHANGELOG.md
index 02a2ed53..d1c70cca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 3.1.1
+May 30th, 2019
+
+### Bug Fixes:
+- fix(is_feature_enabled): Added rollout experiment key map for onboarding datafile. ([#168](https://github.com/optimizely/ruby-sdk/pull/168))
+
 ## 3.1.0
 May 3rd, 2019
 
diff --git a/lib/optimizely/version.rb b/lib/optimizely/version.rb
index 8d5ea5f7..dd5cc8f1 100644
--- a/lib/optimizely/version.rb
+++ b/lib/optimizely/version.rb
@@ -17,5 +17,5 @@
 #
 module Optimizely
   CLIENT_ENGINE = 'ruby-sdk'
-  VERSION = '3.1.0'
+  VERSION = '3.1.1'
 end