expandedYearMonthFormat test failure

[phadej]

% cabal run test-main  -- -p format.expandedYearMonthFormat.random --quickcheck-replay=855626         
Resolving dependencies...
Time
  Format
    ISO8601
      read-show format
        expandedYearMonthFormat
          random: FAIL
            *** Failed! "+000000-100": expected Just (0,100), found Nothing (after 100 tests and 2 shrinks):
            (0,100)
            Use --quickcheck-replay="(SMGen 18001161169210587655 15266913731524793345,100)" to reproduce.

1 out of 1 tests failed (0.15s)