diff --git a/apps/labrinth/migrations/20250117013050_missing-primary-keys.sql b/apps/labrinth/migrations/20250117013050_missing-primary-keys.sql
new file mode 100644
index 000000000..1bcadd678
--- /dev/null
+++ b/apps/labrinth/migrations/20250117013050_missing-primary-keys.sql
@@ -0,0 +1,17 @@
+WITH CTE AS (
+    SELECT ctid,
+           ROW_NUMBER() OVER (PARTITION BY version_id, field_id, enum_value ORDER BY ctid) AS row_num
+    FROM version_fields
+)
+DELETE FROM version_fields
+WHERE ctid IN (
+    SELECT ctid
+    FROM CTE
+    WHERE row_num > 1
+);
+
+ALTER TABLE version_fields
+ADD PRIMARY KEY (version_id, field_id, enum_value);
+
+ALTER TABLE loader_fields_loaders
+ADD PRIMARY KEY (loader_id, loader_field_id);
\ No newline at end of file