diff --git a/app/models/activity.rb b/app/models/activity.rb
index b5f3e0281..ed617c97a 100644
--- a/app/models/activity.rb
+++ b/app/models/activity.rb
@@ -1,4 +1,4 @@
-class Activity < ActiveRecord::Base
+class Activity < ApplicationRecord
   belongs_to :actionable, -> { with_hidden }, polymorphic: true
   belongs_to :user, -> { with_hidden }
 
diff --git a/app/models/administrator.rb b/app/models/administrator.rb
index 6cfafe8d9..b8b6cc1c0 100644
--- a/app/models/administrator.rb
+++ b/app/models/administrator.rb
@@ -1,4 +1,4 @@
-class Administrator < ActiveRecord::Base
+class Administrator < ApplicationRecord
   belongs_to :user, touch: true
   delegate :name, :email, :name_and_email, to: :user
 
diff --git a/app/models/ahoy/event.rb b/app/models/ahoy/event.rb
index 2aac3c59c..ec7e9c57e 100644
--- a/app/models/ahoy/event.rb
+++ b/app/models/ahoy/event.rb
@@ -1,5 +1,5 @@
 module Ahoy
-  class Event < ActiveRecord::Base
+  class Event < ApplicationRecord
     self.table_name = "ahoy_events"
 
     belongs_to :visit
diff --git a/app/models/application_record.rb b/app/models/application_record.rb
new file mode 100644
index 000000000..7a81004d1
--- /dev/null
+++ b/app/models/application_record.rb
@@ -0,0 +1,3 @@
+class ApplicationRecord < ApplicationRecord
+  self.abstract_class = true
+end
\ No newline at end of file
diff --git a/app/models/banner.rb b/app/models/banner.rb
index cc05b3970..9b8ce7b3c 100644
--- a/app/models/banner.rb
+++ b/app/models/banner.rb
@@ -1,4 +1,4 @@
-class Banner < ActiveRecord::Base
+class Banner < ApplicationRecord
 
   acts_as_paranoid column: :hidden_at
   include ActsAsParanoidAliases
diff --git a/app/models/campaign.rb b/app/models/campaign.rb
index 3ce027734..69ab7c811 100644
--- a/app/models/campaign.rb
+++ b/app/models/campaign.rb
@@ -1,2 +1,2 @@
-class Campaign < ActiveRecord::Base
+class Campaign < ApplicationRecord
 end
diff --git a/app/models/comment.rb b/app/models/comment.rb
index 93944cb7e..76e314c23 100644
--- a/app/models/comment.rb
+++ b/app/models/comment.rb
@@ -1,4 +1,4 @@
-class Comment < ActiveRecord::Base
+class Comment < ApplicationRecord
   include Flaggable
   include HasPublicAuthor
   include Graphqlable
diff --git a/app/models/debate.rb b/app/models/debate.rb
index e3b1aad68..fa4130038 100644
--- a/app/models/debate.rb
+++ b/app/models/debate.rb
@@ -1,5 +1,5 @@
 require "numeric"
-class Debate < ActiveRecord::Base
+class Debate < ApplicationRecord
   include Rails.application.routes.url_helpers
   include Flaggable
   include Taggable
diff --git a/app/models/direct_message.rb b/app/models/direct_message.rb
index b4907ae7a..4f3b08482 100644
--- a/app/models/direct_message.rb
+++ b/app/models/direct_message.rb
@@ -1,4 +1,4 @@
-class DirectMessage < ActiveRecord::Base
+class DirectMessage < ApplicationRecord
   belongs_to :sender,   class_name: "User", foreign_key: "sender_id"
   belongs_to :receiver, class_name: "User", foreign_key: "receiver_id"
 
diff --git a/app/models/failed_census_call.rb b/app/models/failed_census_call.rb
index c0add2070..7b3c994d8 100644
--- a/app/models/failed_census_call.rb
+++ b/app/models/failed_census_call.rb
@@ -1,4 +1,4 @@
-class FailedCensusCall < ActiveRecord::Base
+class FailedCensusCall < ApplicationRecord
   belongs_to :user, counter_cache: true
   belongs_to :poll_officer, class_name: "Poll::Officer", counter_cache: true
 end
diff --git a/app/models/flag.rb b/app/models/flag.rb
index a05d8a737..e69393d49 100644
--- a/app/models/flag.rb
+++ b/app/models/flag.rb
@@ -1,4 +1,4 @@
-class Flag < ActiveRecord::Base
+class Flag < ApplicationRecord
   belongs_to :user
   belongs_to :flaggable, polymorphic: true, counter_cache: true, touch: true
 
diff --git a/app/models/geozone.rb b/app/models/geozone.rb
index 7cdcbab27..f32af5ec6 100644
--- a/app/models/geozone.rb
+++ b/app/models/geozone.rb
@@ -1,4 +1,4 @@
-class Geozone < ActiveRecord::Base
+class Geozone < ApplicationRecord
 
   include Graphqlable
 
diff --git a/app/models/identity.rb b/app/models/identity.rb
index e3704da01..311ac61e4 100644
--- a/app/models/identity.rb
+++ b/app/models/identity.rb
@@ -1,4 +1,4 @@
-class Identity < ActiveRecord::Base
+class Identity < ApplicationRecord
   belongs_to :user
 
   validates :provider, presence: true
diff --git a/app/models/lock.rb b/app/models/lock.rb
index 57d437884..bcfa41196 100644
--- a/app/models/lock.rb
+++ b/app/models/lock.rb
@@ -1,4 +1,4 @@
-class Lock < ActiveRecord::Base
+class Lock < ApplicationRecord
   belongs_to :user
 
   before_save :set_locked_until
diff --git a/app/models/manager.rb b/app/models/manager.rb
index d9c1aff07..c0e2987e0 100644
--- a/app/models/manager.rb
+++ b/app/models/manager.rb
@@ -1,4 +1,4 @@
-class Manager < ActiveRecord::Base
+class Manager < ApplicationRecord
   belongs_to :user, touch: true
   delegate :name, :email, :name_and_email, to: :user
 
diff --git a/app/models/moderator.rb b/app/models/moderator.rb
index 6a5af7a52..6871f4cc5 100644
--- a/app/models/moderator.rb
+++ b/app/models/moderator.rb
@@ -1,4 +1,4 @@
-class Moderator < ActiveRecord::Base
+class Moderator < ApplicationRecord
   belongs_to :user, touch: true
   delegate :name, :email, to: :user
 
diff --git a/app/models/notification.rb b/app/models/notification.rb
index f99cbc1ca..738e5ab5f 100644
--- a/app/models/notification.rb
+++ b/app/models/notification.rb
@@ -1,4 +1,4 @@
-class Notification < ActiveRecord::Base
+class Notification < ApplicationRecord
 
   belongs_to :user, counter_cache: true
   belongs_to :notifiable, polymorphic: true
diff --git a/app/models/organization.rb b/app/models/organization.rb
index 0c7aa92e9..2b9be5071 100644
--- a/app/models/organization.rb
+++ b/app/models/organization.rb
@@ -1,4 +1,4 @@
-class Organization < ActiveRecord::Base
+class Organization < ApplicationRecord
 
   include Graphqlable
 
diff --git a/app/models/proposal.rb b/app/models/proposal.rb
index dfba48df1..807944b47 100644
--- a/app/models/proposal.rb
+++ b/app/models/proposal.rb
@@ -1,4 +1,4 @@
-class Proposal < ActiveRecord::Base
+class Proposal < ApplicationRecord
   include Rails.application.routes.url_helpers
   include Flaggable
   include Taggable
diff --git a/app/models/proposal_notification.rb b/app/models/proposal_notification.rb
index bdb9f7698..20fe1f0cb 100644
--- a/app/models/proposal_notification.rb
+++ b/app/models/proposal_notification.rb
@@ -1,4 +1,4 @@
-class ProposalNotification < ActiveRecord::Base
+class ProposalNotification < ApplicationRecord
   include Graphqlable
   include Notifiable
 
diff --git a/app/models/setting.rb b/app/models/setting.rb
index 764408d27..858d22b0f 100644
--- a/app/models/setting.rb
+++ b/app/models/setting.rb
@@ -1,4 +1,4 @@
-class Setting < ActiveRecord::Base
+class Setting < ApplicationRecord
   validates :key, presence: true, uniqueness: true
 
   default_scope { order(id: :asc) }
diff --git a/app/models/spending_proposal.rb b/app/models/spending_proposal.rb
index f5501dc5b..03fb45e79 100644
--- a/app/models/spending_proposal.rb
+++ b/app/models/spending_proposal.rb
@@ -1,4 +1,4 @@
-class SpendingProposal < ActiveRecord::Base
+class SpendingProposal < ApplicationRecord
   include Measurable
   include Sanitizable
   include Taggable
diff --git a/app/models/user.rb b/app/models/user.rb
index c837fbc6b..4dcba1c6f 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,4 +1,4 @@
-class User < ActiveRecord::Base
+class User < ApplicationRecord
 
   include Verification
 
diff --git a/app/models/valuation_assignment.rb b/app/models/valuation_assignment.rb
index a0505a8aa..2aaea14fb 100644
--- a/app/models/valuation_assignment.rb
+++ b/app/models/valuation_assignment.rb
@@ -1,4 +1,4 @@
-class ValuationAssignment < ActiveRecord::Base
+class ValuationAssignment < ApplicationRecord
   belongs_to :valuator, counter_cache: :spending_proposals_count
   belongs_to :spending_proposal, counter_cache: true
 end
diff --git a/app/models/valuator.rb b/app/models/valuator.rb
index 2aedfc8f6..70c0a8201 100644
--- a/app/models/valuator.rb
+++ b/app/models/valuator.rb
@@ -1,4 +1,4 @@
-class Valuator < ActiveRecord::Base
+class Valuator < ApplicationRecord
   belongs_to :user, touch: true
   belongs_to :valuator_group
 
diff --git a/app/models/verified_user.rb b/app/models/verified_user.rb
index 6b0ddb822..205c2dfe9 100644
--- a/app/models/verified_user.rb
+++ b/app/models/verified_user.rb
@@ -1,4 +1,4 @@
-class VerifiedUser < ActiveRecord::Base
+class VerifiedUser < ApplicationRecord
   scope :by_user,  ->(user)  { where(document_number: user.document_number) }
 
   scope :by_email, ->(email) { where(email: email) }
diff --git a/app/models/visit.rb b/app/models/visit.rb
index 6bb47fed0..9bcf891d7 100644
--- a/app/models/visit.rb
+++ b/app/models/visit.rb
@@ -1,4 +1,4 @@
-class Visit < ActiveRecord::Base
+class Visit < ApplicationRecord
   has_many :ahoy_events, class_name: "Ahoy::Event"
   belongs_to :user
 end