Currently Fedora 29 ships 4.07.0 version, but 4.07.1 bugfix release was here already for a while, it makes sense to update.

https://github.com/ocaml/ocaml/releases/tag/4.07.1

OCaml 4.07.1 (4 October 2018)
-----------------------------

### Bug fixes:

- MPR#7815, GPR#1896: major GC crash with first-fit policy
  (Stephen Dolan and Damien Doligez, report by Joris Giovannangeli)

* MPR#7818, GPR#2051: Remove local aliases in functor argument types,
  to prevent the aliasing of their target.
  (Jacques Garrigue, report by mandrykin, review by Leo White)

- MPR#7820, GPR#1897: Fix Array.of_seq. This function used to apply a circular
  permutation of one cell to the right on the sequence.
  (Thierry Martinez, review by Nicolás Ojeda Bär)

- MPR#7821, GPR#1908: make sure that the compilation of extension
  constructors doesn't cause the compiler to load more cmi files
  (Jérémie Dimino, review by Gabriel Scherer)

- MPR#7824, GPR#1914: subtype_row: filter out absent fields when row is closed
  (Leo White and Thomas Refis, report by talex, review by Jacques Garrigue)

- GPR#1915: rec_check.ml is too permissive for certain class declarations.
  (Alban Reynaud with Gabriel Scherer, review by Jeremy Yallop)

- MPR#7833, GPR#1946: typecore: only 1k existential per match, not 100k
  (Thomas Refis, report by Jerome Simeon, review by Jacques Garrigue)

- MPR#7838: -principal causes assertion failure in type checker
(Jacques Garrigue, report by Markus Mottl, review by Thomas Refis)