diff --git a/Gemfile b/Gemfile
index 77cc75a..5208635 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,7 +16,7 @@ gem 'jquery-ui-rails', '~> 5.0.2'
 gem 'simple_form', '>= 4', '< 5'
 gem 'ransack'
 gem 'friendly_id', '~> 5.0.0'
-gem 'devise', '>= 4', '< 4.1.0'
+gem 'devise', '>= 4', '< 4.8.0'
 gem 'factory_girl_rails', '~> 4.5.0'
 gem 'momentjs-rails', '>= 2.9.0'
 gem 'bootstrap3-datetimepicker-rails', '~> 4.14.30'
diff --git a/Gemfile.lock b/Gemfile.lock
index 2750eb1..e5536a5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,10 +78,10 @@ GEM
     crass (1.0.6)
     database_cleaner (1.3.0)
     debugger-linecache (1.2.0)
-    devise (4.0.3)
+    devise (4.7.1)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 4.1.0, < 5.1)
+      railties (>= 4.1.0)
       responders
       warden (~> 1.2.3)
     diff-lcs (1.3)
@@ -295,7 +295,7 @@ DEPENDENCIES
   carrierwave (~> 1.0)
   coffee-rails (>= 4.1.1, < 5)
   database_cleaner (~> 1.3.0)
-  devise (>= 4, < 4.1.0)
+  devise (>= 4, < 4.8.0)
   dotenv-rails (~> 2.2.1)
   factory_girl_rails (~> 4.5.0)
   faker (~> 1.4.3)