diff --git a/.forestry/front_matter/templates/single.yml b/.forestry/front_matter/templates/single.yml
index a71d4ae758c0a306d1a116ca1d7bf93988d88a86..e39d9b6109cb8915dce4cb2f55b04ce6ef9b9655 100644
--- a/.forestry/front_matter/templates/single.yml
+++ b/.forestry/front_matter/templates/single.yml
@@ -5,6 +5,12 @@ fields:
 - type: text
   name: title
   label: title
-- type: file
-  name: overlay_image
-  label: overlay_image
+- name: last_modified_at
+  type: datetime
+  label: Date dernière modification
+  description: ''
+  config:
+    required: false
+    date_format: 
+    time_format: 
+    display_utc: false