# OTP Version Mismatch

**URL:** <https://forum.elixirforum.com/t/otp-version-mismatch/12474>\
**Category:** Questions\
**Tags:** erlang, otp, compile\
**Created:** [February 13, 2018, 4:28pm UTC](https://forum.elixirforum.com/t/otp-version-mismatch/12474 "2018-02-13T16:28:34Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![CptnKirk](https://forum.elixirforum.com/letter_avatar_proxy/v4/letter/c/3e96dc/32.png) [@CptnKirk](https://forum.elixirforum.com/u/CptnKirk)\
**Post date:** [February 13, 2018, 4:46pm UTC](https://forum.elixirforum.com/t/otp-version-mismatch/12474/3 "2018-02-13T16:46:28Z")

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Is only 1 version difference supported, or all future versions? 19 → 20 is ok, how about 19 → 21, etc?

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