diff --git a/Gemfile b/Gemfile
index c24895e..c2a1221 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 source "https://rubygems.org"
 
 #don't upgrade
-gem "rails", "5.1.4"
+gem "rails", "5.1.5.rc1"
 
 ruby "2.4.3"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 37cf9da..18dc22a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,39 +1,39 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.1.4)
-      actionpack (= 5.1.4)
+    actioncable (5.1.5.rc1)
+      actionpack (= 5.1.5.rc1)
       nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.1.4)
-      actionpack (= 5.1.4)
-      actionview (= 5.1.4)
-      activejob (= 5.1.4)
+    actionmailer (5.1.5.rc1)
+      actionpack (= 5.1.5.rc1)
+      actionview (= 5.1.5.rc1)
+      activejob (= 5.1.5.rc1)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.4)
-      actionview (= 5.1.4)
-      activesupport (= 5.1.4)
+    actionpack (5.1.5.rc1)
+      actionview (= 5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.4)
-      activesupport (= 5.1.4)
+    actionview (5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.1.4)
-      activesupport (= 5.1.4)
+    activejob (5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
       globalid (>= 0.3.6)
-    activemodel (5.1.4)
-      activesupport (= 5.1.4)
-    activerecord (5.1.4)
-      activemodel (= 5.1.4)
-      activesupport (= 5.1.4)
+    activemodel (5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
+    activerecord (5.1.5.rc1)
+      activemodel (= 5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
       arel (~> 8.0)
-    activesupport (5.1.4)
+    activesupport (5.1.5.rc1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
       minitest (~> 5.1)
@@ -203,17 +203,17 @@ GEM
       rack
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
-    rails (5.1.4)
-      actioncable (= 5.1.4)
-      actionmailer (= 5.1.4)
-      actionpack (= 5.1.4)
-      actionview (= 5.1.4)
-      activejob (= 5.1.4)
-      activemodel (= 5.1.4)
-      activerecord (= 5.1.4)
-      activesupport (= 5.1.4)
+    rails (5.1.5.rc1)
+      actioncable (= 5.1.5.rc1)
+      actionmailer (= 5.1.5.rc1)
+      actionpack (= 5.1.5.rc1)
+      actionview (= 5.1.5.rc1)
+      activejob (= 5.1.5.rc1)
+      activemodel (= 5.1.5.rc1)
+      activerecord (= 5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
       bundler (>= 1.3.0)
-      railties (= 5.1.4)
+      railties (= 5.1.5.rc1)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
@@ -221,9 +221,9 @@ GEM
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
     rails-perftest (0.0.7)
-    railties (5.1.4)
-      actionpack (= 5.1.4)
-      activesupport (= 5.1.4)
+    railties (5.1.5.rc1)
+      actionpack (= 5.1.5.rc1)
+      activesupport (= 5.1.5.rc1)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
@@ -351,7 +351,7 @@ DEPENDENCIES
   pry
   pry-rails
   rack-livereload
-  rails (= 5.1.4)
+  rails (= 5.1.5.rc1)
   rails-perftest
   rake
   rb-fsevent