Add migration for #378
Add migration for #378

Phoenix1369/site,Phoenix1369/site,Phoenix1369/site,Minkov/site,Minkov/site,Minkov/site,monouno/site,DMOJ/site,monouno/site,DMOJ/site,DMOJ/site,Phoenix1369/site,monouno/site,Minkov/site,monouno/site,DMOJ/site,monouno/site