diff --git a/Appraisals b/Appraisals
index 7caecff8..0d81c349 100644
--- a/Appraisals
+++ b/Appraisals
@@ -20,6 +20,10 @@ appraise 'rails-5' do
   gem 'rails', '5.0.1'
 end
 
+appraise 'rails-5.1' do
+  gem 'rails', '5.1.4'
+end
+
 appraise 'sinatra' do
   gem 'sinatra', '2.0.0'
 end
diff --git a/gemfiles/rails_5.1.gemfile b/gemfiles/rails_5.1.gemfile
new file mode 100644
index 00000000..341ef6f5
--- /dev/null
+++ b/gemfiles/rails_5.1.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "rails", "5.1.4"
+
+gemspec path: "../"