diff --git a/nexus/src/app/rack.rs b/nexus/src/app/rack.rs
index a4d559f823..7a1ad0e6a9 100644
--- a/nexus/src/app/rack.rs
+++ b/nexus/src/app/rack.rs
@@ -891,6 +891,11 @@ impl super::Nexus {
             ),
         })?;
 
+        // Trigger an inventory collection so that the newly added sled is known
+        // about.
+        self.background_tasks
+            .activate(&self.background_tasks.task_inventory_collection);
+
         Ok(())
     }