diff --git a/Gemfile b/Gemfile
index 5a2b4462..0f016dc1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -35,7 +35,7 @@ group :test do
   gem 'coveralls', require: false
   gem 'equivalent-xml'
   gem 'factory_bot_rails'
-  gem 'shoulda-matchers', git: 'https://github.com/thoughtbot/shoulda-matchers.git', branch: 'rails-5'
+  gem 'shoulda-matchers', '~> 4.0.0.rc1'
 end
 
 group :deployment do
diff --git a/Gemfile.lock b/Gemfile.lock
index 0da195a6..385ad4c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,11 +1,3 @@
-GIT
-  remote: https://github.com/thoughtbot/shoulda-matchers.git
-  revision: 4b160bd19ecca7f97d7ac22dccd5fde9b0da5a9f
-  branch: rails-5
-  specs:
-    shoulda-matchers (3.1.2)
-      activesupport (>= 4.2.0)
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -460,6 +452,8 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
+    shoulda-matchers (4.0.0.rc1)
+      activesupport (>= 4.2.0)
     simple_form (4.1.0)
       actionpack (>= 5.0)
       activemodel (>= 5.0)
@@ -566,7 +560,7 @@ DEPENDENCIES
   rubocop (~> 0.60.0)
   rubocop-rspec
   ruby-prof
-  shoulda-matchers!
+  shoulda-matchers (~> 4.0.0.rc1)
   simple_form
   sqlite3
   turbolinks