Regenerate uploaded package at HackageDB

I have uploaded http://hackage.haskell.org/cgi-bin/hackage-scripts/package/probability-0.2.1 and then found that Haddock-2.0 emitted an error, that I did not encounter since I have not upgraded to Haddock-2.0 so far. Now I have uploaded the package again, which shall fix the Haddock problem. However this seems not to trigger the build process again. How to do that?