diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3ff4f07ab..363de9351 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -239,7 +239,7 @@ build-docker-tag:
 
 # Packaging app for amd64
 package-app:
-  image: hexpm/elixir:1.13.4-erlang-24.3.2-${OS}
+  image: 1.13.4-erlang-24.3.3-${OS}
   stage: package
   before_script:
     - apt-get update && apt-get install -yq build-essential git curl cmake
@@ -268,7 +268,7 @@ package-app:
       - ${APP_ASSET}
   parallel:
     matrix:
-      - OS: ["debian-bullseye-20210902", "debian-buster-20210902", "ubuntu-focal-20211006", "ubuntu-bionic-20210930"]
+      - OS: ["debian-bullseye", "debian-buster", "ubuntu-focal", "ubuntu-bionic", "fedora-35", "fedora-36", "alpine-3.14.5", "alpine-3.15.3"]
 
 package-app-dev:
   stage: package
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49baa3dc0..c5ccce3bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 2.1.0-beta.3 - 2022-04-09
+
+Changes since beta.2:
+* Add Fedora and Alpine builds
+
 ## 2.1.0-beta.2 - 2022-04-08
 
 Changes since beta.1 :
diff --git a/UPGRADE.md b/UPGRADE.md
index a7fc96064..8959aaf81 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,5 +1,26 @@
 # Upgrading from 2.0 to 2.1
 
+## Distro-specific packages
+
+Elixir releases are precompiled binaries and are therefore dependent on the host they've been compiled to be compatible with your system (architecture, libc version, …) ([read more](https://hexdocs.pm/mix/Mix.Tasks.Release.html#module-requirements)). For instance, the release build on Debian Bullseye (with libc 2.31) cannot be run on Debian Buster (which only provides libc 2.28). Another example is Red Hat-relative distributions (Fedora, CentOS, …) which have an OpenSSL library version that's not compatible with the version compiled (because of [potential patent issues with Elliptic curves](https://github.com/kerl/kerl#compiling-crypto-on-red-hat-systems)).
+
+In order to make sure the releases package we redistribute , we now build distro-version-specific packages.
+The list of packages built for version 2.1.0 with the amd64 (x86_64) architecture is the following:
+  - Debian Buster (10)
+  - Debian Bullseye (11)
+  - Ubuntu Bionic (18.04)
+  - Ubuntu Focal (20.04)
+  - Fedora 35
+  - Fedora 36
+  - Alpine 3.14.5
+  - Alpine 3.15.3
+
+As building for non-`amd64` architectures is quite difficult (because of the time and extra resources cross-compiling takes), these architectures are only built against Debian Bullseye (11) at the moment.
+
+We want to expand this list in the future to make sure it covers most uses, so feel free to give us feedback from what you need.
+
+Note: Docker images are also built for `amd64`/`arm`/`arm64` architectures, and of course you can always install Mobilizon from source on pretty much any unix-compatible system.
+
 ## Mailer library change
 
 ### Docker
diff --git a/js/package.json b/js/package.json
index 6f5c68f48..9ee8afcec 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mobilizon",
-  "version": "2.1.0-beta.2",
+  "version": "2.1.0-beta.3",
   "private": true,
   "scripts": {
     "serve": "vue-cli-service serve",
diff --git a/mix.exs b/mix.exs
index a626f5067..3900a6999 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Mobilizon.Mixfile do
   use Mix.Project
 
-  @version "2.1.0-beta.2"
+  @version "2.1.0-beta.3"
 
   def project do
     [