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Upgrade AquaticMinecraft mod for 1.21.1

Further upgrades the Update Aquatic with more aquatic additions!

client and servernewest supported 1.21.1AdventureMobsEquipmentGame Mechanics
Latest version
7.0.1
Minecraft
1.16.5 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Forge
Licence
LicenseRef-Abnormals-License
Downloads
2.5M
Updated
11 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Upgrade Aquatic servers

One click and Upgrade Aquatic is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Upgrade Aquatic declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Forge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022
1.16.5Forge, NeoForge8+declared14 Jan 2021

Download

From Upgrade Aquatic’s own host. Nothing is re-hosted here.

7.0.1release17 Oct 2025

upgrade_aquatic-1.21.1-7.0.1.jar · 4.7 MB · for 1.21.1

Download latest
8a2c7e27fecf…
Older versions8
  • 7.0.06 Sept 20251.21.14.7 MB5.6k downloads089080ca16ec…Get
  • 6.0.36 Apr 20251.20.14.8 MB2.2M downloadsa24616ae779f…Get
  • 6.0.24 Feb 20251.20.14.7 MB103.2k downloadsb8de4924291f…Get
  • 6.0.110 Aug 20241.20.14.7 MB55.7k downloadsff308bd4b069…Get
  • 6.0.027 Apr 20241.20.14.7 MB22.9k downloads9b04fe22c55e…Get
  • 5.1.03 Nov 20231.19.24.7 MB31.8k downloadsf37432ab6700…Get
  • 4.0.03 Nov 20231.18.23.5 MB12.8k downloads9342f6f8f63f…Get
  • 3.1.23 Nov 20231.16.53.5 MB34.7k downloads63ceccb33e9a…Get

Frequently asked

Does Upgrade Aquatic work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Upgrade Aquatic 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 Upgrade Aquatic support?

Everything the author has declared, from 1.16.5 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Upgrade Aquatic on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Upgrade Aquatic support?

NeoForge, Forge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Upgrade Aquatic?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Upgrade Aquatic under?

LicenseRef-Abnormals-License, 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 Upgrade Aquatic?

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 Upgrade Aquatic safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .