diff --git a/eos/db/migrations/upgrade40.py b/eos/db/migrations/upgrade40.py
new file mode 100644
index 000000000..597e7934f
--- /dev/null
+++ b/eos/db/migrations/upgrade40.py
@@ -0,0 +1,18 @@
+"""
+Migration 40
+
+Imports all item conversions since Migration 28 and runs them against module.baseItemID. This column seems to have been
+forgotten about since it's been added.
+
+"""
+from .upgrade36 import CONVERSIONS as u36
+from .upgrade37 import CONVERSIONS as u37
+from .upgrade38 import CONVERSIONS as u38
+from .upgrade39 import CONVERSIONS as u39
+
+def upgrade(saveddata_engine):
+    for conversions in [u36, u37, u38, u39]:
+        for replacement_item, list in conversions.items():
+            for retired_item in list:
+                saveddata_engine.execute('UPDATE "modules" SET "baseItemID" = ? WHERE "baseItemID" = ?',
+                               (replacement_item, retired_item))