diff --git a/Gemfile b/Gemfile
index 7134cbd..9d0383f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ gem 'bootstrap-kaminari-views'
 gem 'bootstrap-sass', '>= 3.3.6'
 gem 'business_time'
 gem 'coffee-rails', '~> 4.1.0'
-gem 'devise', '~> 3.5.6'
+gem 'devise', '~> 4.7.1'
 gem 'dotenv-rails', '~> 2.0'
 gem 'health_check'
 gem 'jquery-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index ba5820c..162c9c9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
       railties (>= 3)
     aws-sdk-resources (2.4.3)
       aws-sdk-core (= 2.4.3)
-    bcrypt (3.1.11)
+    bcrypt (3.1.13)
     better_errors (2.1.1)
       coderay (>= 1.0.0)
       erubis (>= 2.6.6)
@@ -81,12 +81,11 @@ GEM
     crass (1.0.4)
     daemons (1.2.3)
     debug_inspector (0.0.2)
-    devise (3.5.6)
+    devise (4.7.1)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
+      railties (>= 4.1.0)
       responders
-      thread_safe (~> 0.1)
       warden (~> 1.2.3)
     dotenv (2.1.0)
     dotenv-rails (2.1.0)
@@ -135,7 +134,7 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     mysql2 (0.4.3)
-    nokogiri (1.10.3)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     pry (0.10.3)
@@ -171,7 +170,7 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.4)
+    rails-html-sanitizer (1.2.0)
       loofah (~> 2.2, >= 2.2.2)
     rails_best_practices (1.16.0)
       activesupport
@@ -187,10 +186,11 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     raindrops (0.16.0)
-    rake (11.1.1)
+    rake (12.3.3)
     require_all (1.3.3)
-    responders (2.2.0)
-      railties (>= 4.2.0, < 5.1)
+    responders (2.4.1)
+      actionpack (>= 4.2.0, < 6.0)
+      railties (>= 4.2.0, < 6.0)
     ruby-progressbar (1.8.1)
     sass (3.4.21)
     sass-rails (5.0.4)
@@ -221,7 +221,7 @@ GEM
       daemons (>= 1.0.9)
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
-    thor (0.19.1)
+    thor (0.20.3)
     thread_safe (0.3.6)
     tilt (2.0.2)
     traceroute (0.5.0)
@@ -238,7 +238,7 @@ GEM
       rack
       raindrops (~> 0.7)
     uniform_notifier (1.10.0)
-    warden (1.2.6)
+    warden (1.2.7)
       rack (>= 1.0)
     web-console (2.3.0)
       activemodel (>= 4.0)
@@ -257,7 +257,7 @@ DEPENDENCIES
   bullet
   business_time
   coffee-rails (~> 4.1.0)
-  devise (~> 3.5.6)
+  devise (~> 4.7.1)
   dotenv-rails (~> 2.0)
   health_check
   jquery-rails