Compatibility
Minecraft: Java Edition
1.21.x
Platforms
Supported environments
Creators
Details
Licensed MIT
Published 2 years ago
Updated 5 months ago
Changelog
Major Changes
JSON Configuration with Automatic Migration
- Configuration files now use JSON format (
simple-modpack-update-checker.json) - Old
.txtconfiguration files are automatically converted to JSON on first run - Automatic backup of old configuration as
.backupfile before deletion - Configuration versioning for future updates
Minecraft Version Filtering (optional)
- Filter updates by specific Minecraft versions using
minecraftVersionsarray - example
"minecraftVersions": ["1.21.4", "1.21.5"]only shows updates compatible with those versions
Release Channel Support (optional)
- Choose update channels with
releaseChannelfield - channels:
"release"(default) - Stable releases only"beta"- beta and stable releases"alpha"- alpha, beta, and stable releases
Configuration Options
| Field | Required | Description | Default | Example |
|---|---|---|---|---|
configVersion |
✅ | Configuration file version | 2 |
2 |
localVersion |
✅ | Current version of your modpack | - | "3.3.3" |
identifier |
✅ | Modrinth project ID or URL | - | "KmiWHzQ4" |
minecraftVersions |
❌ | Specific Minecraft version to track (Modrinth only) |
All versions | ["1.21.4", "1.21.5"] |
releaseChannel |
❌ | Release channel to follow (Modrinth only) |
"release" |
"beta", "alpha" |
Configuration Examples
Minimal Setup
{
"configVersion": 2,
"localVersion": "3.3.3",
"identifier": "KmiWHzQ4"
}
Advanced Setup
{
"configVersion": 2,
"localVersion": "3.3.3",
"identifier": "KmiWHzQ4",
"minecraftVersions": ["1.21.4", "1.21.5"],
"releaseChannel": "beta"
}
Files
Metadata
Release channel
ReleaseVersion number
2.0.0Loaders
Game versions
1.21–1.21.11Environment
Downloads
127849Publication date
August 20, 2025 at 3:21 PMPublisher
Wohlhabend
Member


