diff --git a/lib/galaxy/model/migrations/alembic/versions_gxy/1d1d7bf6ac02_tool_request_implicit_outputs.py b/lib/galaxy/model/migrations/alembic/versions_gxy/1d1d7bf6ac02_tool_request_implicit_outputs.py
index cf87bd84d47d..027815c2382c 100644
--- a/lib/galaxy/model/migrations/alembic/versions_gxy/1d1d7bf6ac02_tool_request_implicit_outputs.py
+++ b/lib/galaxy/model/migrations/alembic/versions_gxy/1d1d7bf6ac02_tool_request_implicit_outputs.py
@@ -8,19 +8,21 @@
 import sqlalchemy as sa
 from sqlalchemy import (
     Column,
+    Integer,
+    String,
 )
 
 from galaxy.model.migrations.util import (
-    add_column,
-    column_exists,
-    drop_column,
+    create_foreign_key,
+    create_table,
+    drop_table,
     transaction,
 )
 
 
 # revision identifiers, used by Alembic.
 revision = '1d1d7bf6ac02'
-down_revision = 'a99a5b52ccb8'
+down_revision = 'cbc46035eba0'
 branch_labels = None
 depends_on = None