diff --git a/Gemfile.lock b/Gemfile.lock
index 8e68583..83c3ab7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,101 +2,93 @@ PATH
   remote: .
   specs:
     scim_rails (0.1.0)
-      rails (~> 5.0)
+      rails (~> 5.0.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.0)
-      actionpack (= 5.2.0)
-      nio4r (~> 2.0)
-      websocket-driver (>= 0.6.1)
-    actionmailer (5.2.0)
-      actionpack (= 5.2.0)
-      actionview (= 5.2.0)
-      activejob (= 5.2.0)
+    actioncable (5.0.0)
+      actionpack (= 5.0.0)
+      nio4r (~> 1.2)
+      websocket-driver (~> 0.6.1)
+    actionmailer (5.0.0)
+      actionpack (= 5.0.0)
+      actionview (= 5.0.0)
+      activejob (= 5.0.0)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.2.0)
-      actionview (= 5.2.0)
-      activesupport (= 5.2.0)
+    actionpack (5.0.0)
+      actionview (= 5.0.0)
+      activesupport (= 5.0.0)
       rack (~> 2.0)
-      rack-test (>= 0.6.3)
+      rack-test (~> 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.2.0)
-      activesupport (= 5.2.0)
+    actionview (5.0.0)
+      activesupport (= 5.0.0)
       builder (~> 3.1)
-      erubi (~> 1.4)
+      erubis (~> 2.7.0)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.2.0)
-      activesupport (= 5.2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (5.0.0)
+      activesupport (= 5.0.0)
       globalid (>= 0.3.6)
-    activemodel (5.2.0)
-      activesupport (= 5.2.0)
-    activerecord (5.2.0)
-      activemodel (= 5.2.0)
-      activesupport (= 5.2.0)
-      arel (>= 9.0)
-    activestorage (5.2.0)
-      actionpack (= 5.2.0)
-      activerecord (= 5.2.0)
-      marcel (~> 0.3.1)
-    activesupport (5.2.0)
+    activemodel (5.0.0)
+      activesupport (= 5.0.0)
+    activerecord (5.0.0)
+      activemodel (= 5.0.0)
+      activesupport (= 5.0.0)
+      arel (~> 7.0)
+    activesupport (5.0.0)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
+      i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    arel (9.0.0)
+    arel (7.1.4)
     builder (3.2.3)
     concurrent-ruby (1.0.5)
     crass (1.0.4)
     diff-lcs (1.3)
-    erubi (1.7.1)
+    erubis (2.7.0)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
-    i18n (1.1.1)
+    i18n (0.9.5)
       concurrent-ruby (~> 1.0)
     loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
-    marcel (0.3.2)
-      mimemagic (~> 0.3.2)
     method_source (0.9.0)
-    mimemagic (0.3.2)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
-    nio4r (2.3.1)
+    nio4r (1.2.1)
     nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
     rack (2.0.5)
-    rack-test (1.0.0)
-      rack (>= 1.0, < 3)
-    rails (5.2.0)
-      actioncable (= 5.2.0)
-      actionmailer (= 5.2.0)
-      actionpack (= 5.2.0)
-      actionview (= 5.2.0)
-      activejob (= 5.2.0)
-      activemodel (= 5.2.0)
-      activerecord (= 5.2.0)
-      activestorage (= 5.2.0)
-      activesupport (= 5.2.0)
-      bundler (>= 1.3.0)
-      railties (= 5.2.0)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (5.0.0)
+      actioncable (= 5.0.0)
+      actionmailer (= 5.0.0)
+      actionpack (= 5.0.0)
+      actionview (= 5.0.0)
+      activejob (= 5.0.0)
+      activemodel (= 5.0.0)
+      activerecord (= 5.0.0)
+      activesupport (= 5.0.0)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 5.0.0)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.2.0)
-      actionpack (= 5.2.0)
-      activesupport (= 5.2.0)
+    railties (5.0.0)
+      actionpack (= 5.0.0)
+      activesupport (= 5.0.0)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
@@ -125,7 +117,7 @@ GEM
     thread_safe (0.3.6)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    websocket-driver (0.7.0)
+    websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
 
diff --git a/scim_rails.gemspec b/scim_rails.gemspec
index 74f7c54..d70de53 100644
--- a/scim_rails.gemspec
+++ b/scim_rails.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
 
   s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
-  s.add_dependency "rails", "~> 5.0"
+  s.add_dependency "rails", "~> 5.0.0"
 
   s.add_development_dependency "bundler", "~> 1.16"
   s.add_development_dependency "rake", "~> 10.0"
--
libgit2 0.21.0