diff --git a/src/ims/application/_api.py b/src/ims/application/_api.py
index 759f0d14e..d0a6ce97e 100644
--- a/src/ims/application/_api.py
+++ b/src/ims/application/_api.py
@@ -424,6 +424,7 @@ async def newIncidentResource(
 
         json[IncidentJSONKey.number.value] = 0
         json[IncidentJSONKey.created.value] = jsonNow
+        json[IncidentJSONKey.lastModified.value] = jsonNow
 
         # If not provided, set JSON event, state to new, priority to normal