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Release Java Edition Bug-fix update Patch of 1.18 Caves & Cliffs: Part II

Minecraft 1.18.1

Released on 10 December 2021, Minecraft Java Edition 1.18.1 is the first fix for 1.18 Caves & Cliffs: Part II. It fixes a critical security issue for multiplayer servers, the Log4j vulnerability, makes world fog start further away so distant terrain is more visible, and fixes six listed bugs.

Released 10 Dec 2021 Resource pack format 8 Data version 2865
Are my mods ready?

Key takeaways

  • Security: 1.18.1 fixes the Log4j vulnerability, and Mojang urged 1.18 server owners to upgrade as soon as possible.
  • Fog: world fog starts further away from the player and is applied as a cylinder instead of a sphere, so distant terrain is easier to see.
  • Render distance: the actual render distance is no longer 2 chunks lower than the setting (MC-152198), including on servers (MC-243216).

What changed

MultiplayerPlayers on low-bandwidth connections no longer get timeout errors when connecting to a server.
FixesMC-219507: a Beacon's power reverted to the previous one when the world was reloaded.
FixesMC-229321: Bees inside Beehives and Bee Nests sometimes despawned when the world was reloaded.
FixesMC-242729: an Observer activated without any nearby update after using /clone.
TechnicalMC-243796: random non-fatal ConcurrentModificationException errors appeared in the console when storing chunks.

Source: official Java Edition 1.18.1 changelog

Mods & loaders for 1.18.1

Mods must be rebuilt for each version. Counts from the files published on Modrinth and CurseForge, in our catalog.

LoaderMods with a 1.18.1 fileLatest build
Fabric1390.20.1
NeoForge9·
Forge20639.1.0
Quilt42·
Shader loadersShaders with a 1.18.1 fileLatest build
Iris76·
OptiFine68·
Popular mods Sodium · AvailableJust Enough Items (JEI) · AvailableFabric API · AvailableLithium · AvailableIris Shaders · AvailableOptiFine · Available
264 mods in our catalog have a 1.18.1 file →

199 texture packs and 53 maps in our catalog support 1.18.1.

How to play 1.18.1

  1. 01

    Open the Minecraft Launcher and select Minecraft: Java Edition.

  2. 02

    Go to Installations, create a new installation and choose version 1.18.1.

  3. 03

    Back up your worlds before opening them in a new version.

From first snapshot to release

0 snapshots, 1 pre-releases and 3 release candidates over 7 days.

  1. 1.18.1-pre103 Dec 2021
  2. 1.18.1-rc107 Dec 2021
  3. 1.18.110 Dec 2021
All 4 test builds →

Minecraft 1.18.1 FAQ

When was Minecraft 1.18.1 released?

On 10 December 2021, for Java Edition, ten days after 1.18. The same day, Mojang's security notice on the Log4j vulnerability told 1.18 server owners to upgrade to 1.18.1.

What does Minecraft 1.18.1 fix?

The Log4j security issue for multiplayer servers, timeouts on slow connections, a render distance 2 chunks shorter than set, and bugs with Beacons, Bees, Observers and chunk saving. It also pushes world fog further away.

Should I update from 1.18 to 1.18.1?

Yes, and it is essential for servers: Mojang advised all 1.18 server owners to upgrade as soon as possible. Players using the official launcher get patched clients by restarting it.