diff --git a/core/inventory/admin.py b/core/inventory/admin.py
index 2457b5b..24cd14a 100644
--- a/core/inventory/admin.py
+++ b/core/inventory/admin.py
@@ -1,6 +1,6 @@
 from django.contrib import admin
 
-from inventory.models import Item, Container, Event
+from inventory.models import Item, Container, ItemPlacement, Comment, Event
 
 
 class ItemAdmin(admin.ModelAdmin):
@@ -22,3 +22,17 @@ class EventAdmin(admin.ModelAdmin):
 
 
 admin.site.register(Event, EventAdmin)
+
+
+class ItemPlacementAdmin(admin.ModelAdmin):
+    pass
+
+
+admin.site.register(ItemPlacement, ItemPlacementAdmin)
+
+
+class CommentAdmin(admin.ModelAdmin):
+    pass
+
+
+admin.site.register(Comment, CommentAdmin)