Update utop to match signature
Update utop to match signature

Signed-off-by: Stephanie You <34a39cea6f4ede1e2c172285a724027bfaf13ff0@gmail.com>

dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder,janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder