diff --git a/app/controllers/new_administrateur/procedures_controller.rb b/app/controllers/new_administrateur/procedures_controller.rb
index 7a2169656..8b2c0431d 100644
--- a/app/controllers/new_administrateur/procedures_controller.rb
+++ b/app/controllers/new_administrateur/procedures_controller.rb
@@ -1,6 +1,6 @@
 module NewAdministrateur
   class ProceduresController < AdministrateurController
-    before_action :retrieve_procedure, only: [:champs, :annotations, :edit, :monavis, :update_monavis, :jeton, :update_jeton, :publication, :publish, :transfert, :allow_expert_review, :invited_expert_list]
+    before_action :retrieve_procedure, only: [:champs, :annotations, :edit, :monavis, :update_monavis, :jeton, :update_jeton, :publication, :publish, :transfert, :allow_expert_review, :invited_expert_list, :update_allow_decision_access]
     before_action :procedure_locked?, only: [:champs, :annotations]
 
     ITEMS_PER_PAGE = 25
@@ -189,6 +189,13 @@ module NewAdministrateur
       @experts_procedure = @procedure.experts_procedures.sort_by { |expert_procedure| expert_procedure.expert.email }
     end
 
+    def update_allow_decision_access
+      @procedure
+        .experts_procedures
+        .find(params[:expert_procedure])
+        .update!(allow_decision_access_params)
+    end
+
     private
 
     def apercu_tab
@@ -215,5 +222,9 @@ module NewAdministrateur
     def publish_params
       params.permit(:path, :lien_site_web)
     end
+
+    def allow_decision_access_params
+      params.require(:experts_procedure).permit(:allow_decision_access)
+    end
   end
 end
diff --git a/config/routes.rb b/config/routes.rb
index f9a9f8131..f3117b72b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -379,13 +379,14 @@ Rails.application.routes.draw do
         get 'jeton'
         patch 'update_jeton'
         put :allow_expert_review
-        get 'invited_expert_list'
       end
 
       get 'publication' => 'procedures#publication', as: :publication
       put 'publish' => 'procedures#publish', as: :publish
       get 'transfert' => 'procedures#transfert', as: :transfert
       post 'transfer' => 'procedures#transfer', as: :transfer
+      get 'invited_expert_list'
+      put 'update_allow_decision_access' => 'procedures#update_allow_decision_access', as: :update_allow_decision_access
 
       resources :mail_templates, only: [:edit, :update]