diff --git a/Gemfile b/Gemfile
index 9e0cd63..099f0c0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -68,7 +68,7 @@ gem 'bootstrap-will_paginate', '0.0.10'
 gem 'paperclip', '>= 5.2.0'
 
 # Use devise for users and admins
-gem 'devise', '3.5.6'
+gem "devise", ">= 4.6.0"
 gem 'omniauth-oauth2', '1.3.1'
 
 # Use cancancan for authorization
diff --git a/Gemfile.lock b/Gemfile.lock
index c987be3..59fa6fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,12 +103,11 @@ GEM
     delayed_job_active_record (4.1.4)
       activerecord (>= 3.0, < 6.1)
       delayed_job (>= 3.0, < 5)
-    devise (3.5.6)
+    devise (4.7.0)
       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)
     diff-lcs (1.3)
     docile (1.1.5)
@@ -324,7 +323,7 @@ DEPENDENCIES
   daemons (= 1.2.3)
   delayed_job (~> 4.0)
   delayed_job_active_record
-  devise (= 3.5.6)
+  devise (>= 4.6.0)
   factory_girl_rails (= 4.6.0)
   faker (= 1.4.2)
   friendly_id (~> 5.1.0)