mod
Old School JailMinecraft mod for 26.1.2
A jail mod for fabric servers, just like the good old days!
- Latest version
- 1.1.0
- Minecraft
- 1.21.2 to 26.1.2
- Java
- Java 25+
- Loaders
- Quilt, Fabric
- Licence
- MIT
- Downloads
- 418
- Updated
- 2 mo ago
- Available on
- Modrinth
PartnerHost Old School Jail servers
One click and Old School Jail is installed with the right loader, on hardware built for it.
- 26.1.2
- Quilt
- Fabric
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Minecraft versions
Every version Old School Jail declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 26.1.2 | Quilt, Fabric | 25+ | declared | 9 Apr 2026 |
| 26.1.1 | Fabric, Quilt | 25+ | declared | 1 Apr 2026 |
| 26.1 | Fabric, Quilt | 25+ | declared | 24 Mar 2026 |
| 1.21.11 | Quilt, Fabric | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Quilt, Fabric | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Fabric, Quilt | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Quilt, Fabric | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Quilt, Fabric | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Quilt, Fabric | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Fabric, Quilt | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Quilt, Fabric | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Quilt, Fabric | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Quilt, Fabric | 21+ | declared | 22 Oct 2024 |
Download
From Old School Jail’s own host. Nothing is re-hosted here.
oldschooljail-1.1.0.jar · 0.2 MB · for 26.1, 26.1.1, 26.1.2
98013a1053a8…Older versions6Hide older versions
- 1.0.523 May 20261.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.60.2 MB46 downloads
3dc749e845d5…Get - 1.0.49 Oct 20251.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.60.2 MB237 downloads
b8cea579cd8d…Get - 1.0.33 Oct 20251.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.60.2 MB25 downloads
08c599802960…Get - 1.0.22 Oct 20251.21.80.2 MB17 downloads
b749a7e46244…Get - 1.0.12 Oct 20251.21.80.3 MB18 downloads
60c4766a5515…Get - 1.0.01 Oct 20251.21.80.3 MB20 downloads
318ac2191949…Get
Frequently asked
Does Old School Jail work on Minecraft 26.1.2?
Yes. 26.1.2 is the newest Minecraft version Old School Jail declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Old School Jail support?
Everything the author has declared, from 1.21.2 up to 26.1.2. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Old School Jail on the client or the server?
The server only. Players join with an ordinary Minecraft client and install nothing.
Which loader does Old School Jail need?
Quilt, Fabric. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Old School Jail?
Java 25 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.
What licence is Old School Jail under?
MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Old School Jail?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Old School Jail safely?
From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .