diff --git a/manifest b/manifest
index affb2f241..20b88102d 100644
--- a/manifest
+++ b/manifest
@@ -53,4 +53,5 @@ invited_users.sql
 collapse_user_and_admin.sql
 default_gender_to_null.sql
 subscribe_email.sql
-notifications.sql
\ No newline at end of file
+notifications.sql
+artifact_metadata.sql
diff --git a/up/artifact_metadata.sql b/up/artifact_metadata.sql
new file mode 100644
index 000000000..77905a8d3
--- /dev/null
+++ b/up/artifact_metadata.sql
@@ -0,0 +1,3 @@
+-- add a size field and make md5 required
+ALTER TABLE artifact_updates ADD COLUMN size INTEGER NOT NULL;
+ALTER TABLE artifact_updates ALTER COLUMN sha1 SET NOT NULL;