diff --git a/theme.json b/theme.json
index f25f784..953ad08 100644
--- a/theme.json
+++ b/theme.json
@@ -208,6 +208,25 @@
           "size": "1.875rem"
         }
       ]
+    },
+    "dimensions": {
+      "aspectRatios": [
+        {
+          "name": "Bannière  - 4:1",
+          "slug": "4-1",
+          "ratio": "4/1"
+        },
+        {
+          "name": "Extra Wide - 2:1",
+          "slug": "2-1",
+          "ratio": "2/1"
+        },
+        {
+          "name": "Cinema - 21:9",
+          "slug": "21-9",
+          "ratio": "21/9"
+        }
+      ]
     }
   }
 }
\ No newline at end of file