diff --git a/lib/db.py b/lib/db.py
index 2d2b407..53d5d3a 100644
--- a/lib/db.py
+++ b/lib/db.py
@@ -147,9 +147,14 @@ class DB:
             "UPDATE scheme SET version=10",
         )
         schemes[11] = (
-            "create index request_number_idx on revisions (request_number);",
+            "create index request_number_idx on revisions (request_number)",
             "UPDATE scheme SET version=11",
         )
+        schemes[12] = (
+            "create index request_number_idx2 on requests(number)",
+            "UPDATE scheme SET version=12",
+        )
+
         schema_version = self.schema_version()
         if (schema_version + 1) not in schemes:
             return