diff --git a/app/controllers/instructeurs/dossiers_controller.rb b/app/controllers/instructeurs/dossiers_controller.rb
index fc3900a6a..697f20286 100644
--- a/app/controllers/instructeurs/dossiers_controller.rb
+++ b/app/controllers/instructeurs/dossiers_controller.rb
@@ -113,7 +113,7 @@ module Instructeurs
     end
 
     def unarchive
-      dossier.desarchiver!(current_instructeur)
+      dossier.desarchiver!
       redirect_back(fallback_location: instructeur_procedure_path(procedure))
     end
 
diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index d54382fb8..16ebe8a2d 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -5,6 +5,8 @@
 #  id                                                 :integer          not null, primary key
 #  api_entreprise_job_exceptions                      :string           is an Array
 #  archived                                           :boolean          default(FALSE)
+#  archived_at                                        :datetime
+#  archived_by                                        :string
 #  autorisation_donnees                               :boolean
 #  brouillon_close_to_expiration_notice_sent_at       :datetime
 #  conservation_extension                             :interval         default(0 seconds)
@@ -636,14 +638,12 @@ class Dossier < ApplicationRecord
     end
   end
 
-  def archiver!(author)
-    update!(archived: true)
-    log_dossier_operation(author, :archiver)
+  def archiver!(instructeur)
+    update!(archived: true, archived_at: Time.zone.now, archived_by: instructeur.email)
   end
 
-  def desarchiver!(author)
-    update!(archived: false)
-    log_dossier_operation(author, :desarchiver)
+  def desarchiver!
+    update!(archived: false, archived_at: nil, archived_by: nil)
   end
 
   def text_summary
diff --git a/app/models/dossier_operation_log.rb b/app/models/dossier_operation_log.rb
index 0ad0bcc1f..7ac45bd9f 100644
--- a/app/models/dossier_operation_log.rb
+++ b/app/models/dossier_operation_log.rb
@@ -26,9 +26,7 @@ class DossierOperationLog < ApplicationRecord
     supprimer: 'supprimer',
     restaurer: 'restaurer',
     modifier_annotation: 'modifier_annotation',
-    demander_un_avis: 'demander_un_avis',
-    archiver: 'archiver',
-    desarchiver: 'desarchiver'
+    demander_un_avis: 'demander_un_avis'
   }
 
   has_one_attached :serialized
diff --git a/db/migrate/20221130113745_add_archived_at_and_archived_by_to_dossiers.rb b/db/migrate/20221130113745_add_archived_at_and_archived_by_to_dossiers.rb
new file mode 100644
index 000000000..2b27ea084
--- /dev/null
+++ b/db/migrate/20221130113745_add_archived_at_and_archived_by_to_dossiers.rb
@@ -0,0 +1,6 @@
+class AddArchivedAtAndArchivedByToDossiers < ActiveRecord::Migration[6.1]
+  def change
+    add_column :dossiers, :archived_at, :datetime
+    add_column :dossiers, :archived_by, :string
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index f3d6a9397..753846fe3 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_11_22_145030) do
+ActiveRecord::Schema.define(version: 2022_11_30_113745) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
@@ -304,6 +304,8 @@ ActiveRecord::Schema.define(version: 2022_11_22_145030) do
   create_table "dossiers", id: :serial, force: :cascade do |t|
     t.string "api_entreprise_job_exceptions", array: true
     t.boolean "archived", default: false
+    t.datetime "archived_at"
+    t.string "archived_by"
     t.boolean "autorisation_donnees"
     t.datetime "brouillon_close_to_expiration_notice_sent_at"
     t.interval "conservation_extension", default: "PT0S"