diff --git a/app/controllers/admin/procedures_controller.rb b/app/controllers/admin/procedures_controller.rb
index e3e834d55..a159762b0 100644
--- a/app/controllers/admin/procedures_controller.rb
+++ b/app/controllers/admin/procedures_controller.rb
@@ -250,7 +250,7 @@ class Admin::ProceduresController < AdminController
   private
 
   def procedure_params
-    editable_params = [:libelle, :description, :organisation, :direction, :lien_site_web, :lien_notice, :euro_flag, :logo, :auto_archive_on]
+    editable_params = [:libelle, :description, :organisation, :direction, :lien_site_web, :lien_notice, :web_hook_url, :euro_flag, :logo, :auto_archive_on]
     if @procedure.try(:locked?)
       params.require(:procedure).permit(*editable_params)
     else
diff --git a/app/jobs/web_hook_job.rb b/app/jobs/web_hook_job.rb
new file mode 100644
index 000000000..836ea29d9
--- /dev/null
+++ b/app/jobs/web_hook_job.rb
@@ -0,0 +1,16 @@
+class WebHookJob < ApplicationJob
+  queue_as :default
+
+  TIMEOUT = 10
+
+  def perform(procedure, dossier)
+    body = {
+      procedure_id: procedure.id,
+      dossier_id: dossier.id,
+      state: dossier.state,
+      updated_at: dossier.updated_at
+    }
+
+    Typhoeus.post(procedure.web_hook_url, body: body, timeout: TIMEOUT)
+  end
+end
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index 2ba5fddc7..6c925cf1b 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -75,6 +75,7 @@ class Dossier < ApplicationRecord
   after_save :build_default_champs, if: Proc.new { saved_change_to_procedure_id? }
   after_save :build_default_individual, if: Proc.new { procedure.for_individual? }
   after_save :send_dossier_received
+  after_save :send_web_hook
   after_create :send_draft_notification_email
 
   validates :user, presence: true
@@ -326,4 +327,13 @@ class Dossier < ApplicationRecord
       NotificationMailer.send_draft_notification(self).deliver_now!
     end
   end
+
+  def send_web_hook
+    if saved_change_to_state? && !brouillon? && procedure.web_hook_url
+      WebHookJob.perform_later(
+        procedure,
+        self
+      )
+    end
+  end
 end
diff --git a/app/views/admin/procedures/_informations.html.haml b/app/views/admin/procedures/_informations.html.haml
index 76f5568c8..ba6ccefde 100644
--- a/app/views/admin/procedures/_informations.html.haml
+++ b/app/views/admin/procedures/_informations.html.haml
@@ -2,15 +2,19 @@
   .alert.alert-info
     Cette procédure est publiée, certains éléments de la description ne sont plus modifiables
 
-- { libelle: 'Libellé*', description: 'Description*', organisation: 'Organisme*', direction: 'Direction', lien_site_web: 'Lien site internet', lien_notice: 'Lien notice' }.each do |key, value|
-  .form-group
-    %h4
-      = value
-    - if key == :description
-      = f.text_area key, rows: '6', placeholder: 'Description du projet', class: 'form-control'
+- { libelle: 'Libellé*', description: 'Description*', organisation: 'Organisme*', direction: 'Direction', lien_site_web: 'Lien site internet', lien_notice: 'Lien notice', web_hook_url: 'Lien de rappel HTTP' }.each do |key, value|
+  - if key != :web_hook_url || current_administrateur&.feature_enabled?(:web_hook_allowed)
+    .form-group
+      %h4
+        = value
+      - if key == :web_hook_url
+        %p
+          Un lien de rappel HTTP (aussi appelé webhook) est utilisé pour notifier un service tiers du changement de l'état d’un dossier sur demarches-simplifiees.fr. À chaque changement d’état d'un dossier, notre site va effectuer une requête sur le lien renseigné avec en paramètres : le nouvel état du dossier, l’identifiant de la procédure, l'identifiant dossier et la date du changement. Vous pourrez alors utiliser notre API pour récupérer les nouvelles informations du dossier concerné.
+      - if key == :description
+        = f.text_area key, rows: '6', placeholder: 'Description du projet', class: 'form-control'
 
-    - else
-      = f.text_field key, class: 'form-control', placeholder: value
+      - else
+        = f.text_field key, class: 'form-control', placeholder: value
 
 .row
   .col-md-6
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 54fe2f2a8..9de8d2433 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -44,6 +44,8 @@ Rails.application.configure do
     protocol: :http
   }
 
+  config.active_job.queue_adapter = :test
+
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
 end
diff --git a/config/initializers/features.yml b/config/initializers/features.yml
index a7b150256..71aea0c20 100644
--- a/config/initializers/features.yml
+++ b/config/initializers/features.yml
@@ -4,3 +4,5 @@ champ_pj_allowed_for_admin_ids:
   - 0
 champ_siret_allowed_for_admin_ids:
   - 0
+web_hook_allowed_for_admin_ids:
+  - 0
diff --git a/db/migrate/20180301123826_add_webhook_to_procedures.rb b/db/migrate/20180301123826_add_webhook_to_procedures.rb
new file mode 100644
index 000000000..9aba4a9c8
--- /dev/null
+++ b/db/migrate/20180301123826_add_webhook_to_procedures.rb
@@ -0,0 +1,5 @@
+class AddWebhookToProcedures < ActiveRecord::Migration[5.2]
+  def change
+    add_column :procedures, :web_hook_url, :string
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 51e42562f..aaa50a105 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -453,6 +453,7 @@ ActiveRecord::Schema.define(version: 2018_04_04_113409) do
     t.datetime "archived_at"
     t.datetime "whitelisted_at"
     t.boolean "ask_birthday", default: false, null: false
+    t.string "web_hook_url"
     t.index ["hidden_at"], name: "index_procedures_on_hidden_at"
   end
 
diff --git a/spec/models/dossier_spec.rb b/spec/models/dossier_spec.rb
index 68a9b50c7..27b2cede1 100644
--- a/spec/models/dossier_spec.rb
+++ b/spec/models/dossier_spec.rb
@@ -896,4 +896,34 @@ describe Dossier do
       it { is_expected.to eq(expected) }
     end
   end
+
+  describe 'webhook' do
+    let(:dossier) { create(:dossier) }
+
+    it 'should not call webhook' do
+      expect {
+        dossier.accepte!
+      }.to_not have_enqueued_job(WebHookJob)
+    end
+
+    it 'should call webhook' do
+      dossier.procedure.update_column(:web_hook_url, '/webhook.json')
+
+      expect {
+        dossier.update_column(:motivation, 'bonjour')
+      }.to_not have_enqueued_job(WebHookJob)
+
+      expect {
+        dossier.en_construction!
+      }.to have_enqueued_job(WebHookJob)
+
+      expect {
+        dossier.update_column(:motivation, 'bonjour2')
+      }.to_not have_enqueued_job(WebHookJob)
+
+      expect {
+        dossier.en_instruction!
+      }.to have_enqueued_job(WebHookJob)
+    end
+  end
 end