What Litematica version do I have
The fastest way to see which Litematica you run is the jar name in the mods folder. It carries both the Minecraft version and the mod version, and that is all you need to compare with the fixed builds.
- Open your Minecraft folder and then the mods folder for the profile you play.
- Find the Litematica jar and read its name.
- Split the name: the Minecraft version comes first, the mod version second.
- Compare with the fixed version for your Minecraft version.
Reading the name
| Part | Example | Meaning |
|---|---|---|
| mod and loader | litematica-fabric | Litematica for Fabric |
| Minecraft version | 1.21.4 | The game version the jar was built for |
| mod version | 0.21.7 | The Litematica release; this is the number you compare |
A launcher or mod manager that lists installed mods shows the same two numbers. If you use a mod menu mod, its list also shows the version. The file name is enough and works everywhere.
Compare
For Minecraft 1.21.4 the fixed Litematica is 0.21.7 or higher. Other versions are in the table on the Litematica vulnerability page. If yours is lower, follow how to update Litematica.
Two Litematica jars for the same Minecraft version in the folder is a mistake to fix first. Keep one. If the mod does not load at all, start with Litematica not working.
FAQ
How do I read litematica-fabric-1.21.4-0.21.7.jar?
Fabric is the loader, 1.21.4 is the Minecraft version, and 0.21.7 is the Litematica version.
Where is the mods folder?
Inside your Minecraft game directory, in a folder named mods. In the launcher, the profile’s open-folder button opens that directory. If you use another launcher, use its open-folder option for the instance.
The file name has no version. What now?
If someone renamed it, you cannot trust the name. Download the right build from Modrinth, delete the unknown jar, and put the fresh one in.
Is 0.21.7 the latest for 1.21.4?
On Modrinth on 2026-10-02 it was the newest Litematica listed for 1.21.4, published 2026-07-06. It is the build the maintainer named as fixed for that Minecraft version.
Questions: hello@minecraftschematicgenerator.com
Reviewed 2026-10-02. Not affiliated with Mojang or Microsoft.