Skip to content

Simple Update Checker

Simple modpack update checker for Modrinth. Works client side and server side

FabricQuilt
Loaders
FabricQuilt
Downloads on Modrinth
169K
Followers on Modrinth
37
versions
9
Updated
September 11, 2026Sep 11
Published
in 2024
Main menu with update available · swipe

At a glance

Runs on Fabric and Quilt
For Minecraft 1.21.1, 1.21.3–26.3
Works on either side — install it in the game, on the server, or both
Latest version — 1.7.0+26.3-rc-1 from September 11, 2026
License LGPL-3.0-only — free
Where it's needed
In gameoptionalOn serveroptional

Works both in the game and on the server — install where you need it

Game versions1.21.1, 1.21.3–26.3

Simple Update Checker

Simple Update Checker is a small mod that adds in-game notification about Modrinth modpack update being available. It works for both servers and clients.

The update information is displayed in logs on server/client boot and then in other places depending on where it runs. For clients, it displays update info on main screen (on right side from modpack name/version text), refreshing every hour after the game starts. For servers, it displays it in logs after server starts and for operators on join. After that, it will check it every 12 hours until update is found, after which it will repeat it after double time from last message, up to 14 days of delay (12 hours, 1 day, 2 days, 4 days, 8 days, 14 days). The check can also be triggered manually with /simpleupdatechecker check command, with limitation of 15 minutes per refresh.

All the checks can be disabled in simpleupdatechecker_user.json config or via /simpleupdatechecker settings command.

Configuration (User)

You can change settings via `/simpleupdatechecker settings or within config. Both use same names. You can find the config file inconfig/simpleupdatechecker_user.jsonand reload it with/simpleupdatechecker reload` command.

{
  // Disables update checking all together
  "disable_update_checking": false,
  // Disables showing modpack version and update info in main menu
  "disable_main_menu": false,
  // Disables sending info about update in logs after first version check.
  "disable_logs_first_check": false,
  // Disables sending info about update in logs after server starts.
  "disable_logs_server_started": false,
  // Disables sending info about update in logs repeatedly.
  "disable_logs_late": false,
  // Disables sending info about update to level 4 operators when they join.
  "disable_join_ops": false
}

Configuration (Modpack)

This one should only be changed by modpack creator and as such only contains modpack related definitions You can find the config file in config/simpleupdatechecker_modpack.json and reload it with /simpleupdatechecker reload command.

{
  // Slug / Project id on Modrinth, used for lookup.
  "project_id": "some_project",
  // Version Number in incremental format, ideally same as one provided on Modrinth.
  "version_id": "1.0.0",
  // (Optional, empty to disable) Name of the modpack displayed in main menu and placeholders. Fallbacks to project_id.
  "display_name": "My modpack!",
  // (Optional, empty to disable) Modpack version used for display, if you want to make it look different.
  "display_version": "",
  // Allowed release types, matches with Modrinth ones. By default it allows all, but you can remove them as you want.
  // Removing "beta" and "alpha" will prevent from recommending updating to beta and alpha versions.
  "release_type": [
    "alpha",
    "beta",
    "release"
  ],
  // Maximum (exclusive) version that gets matched, should use same format as version_id / modrinth version numbers.
  // Prevents from versions equal or newer than provided from being matched as update.
  "max_exclusive_version": "",
  // Makes update version use version number for display instead of version name (top field).
  "use_version_number_for_display": true
}

FAQ

How to install Simple Update Checker?

Install Fabric for your Minecraft version, download Simple Update Checker for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Simple Update Checker support?

Simple Update Checker has builds for Minecraft 1.21.1, 1.21.3–26.3.

Is Simple Update Checker needed on the server?

Works on either side — install it in the game, on the server, or both

License and source
GNU Lesser General Public License v3.0 onlyfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

The site uses cookies: the necessary ones for sign-in and the theme, plus the Yandex Metrica and LiveInternet visit counters — they show us how the site is used. We have no advertising cookies. More