diff --git a/Gemfile b/Gemfile
index bd0373c1d..573192fa8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -19,7 +19,7 @@ gem 'jquery-ui-rails'
 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
 gem 'turbolinks'
 
-gem 'devise'
+gem 'devise', '~> 3.5.6'
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
 gem 'omniauth'
diff --git a/Gemfile.lock b/Gemfile.lock
index b496aefbc..65f5a75d2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -443,7 +443,7 @@ DEPENDENCIES
   dalli
   database_cleaner
   delayed_job_active_record (~> 4.1.0)
-  devise
+  devise (~> 3.5.6)
   devise-async
   email_spec
   factory_girl_rails