diff --git a/latest/setup/installation.html b/latest/setup/installation.html
index dbee407b9d..bca8bf6e8d 100644
--- a/latest/setup/installation.html
+++ b/latest/setup/installation.html
@@ -207,7 +207,9 @@ the main configuration file at <code>/etc/matrix-synapse/homeserver.yaml</code>.
By doing that, you won't be asked if you want to replace your configuration
file when you upgrade the Debian package to a later version.</p>
<h5 id="downstream-debian-packages"><a class="header" href="#downstream-debian-packages">Downstream Debian packages</a></h5>
-<p>Andrej Shadura maintains a <code>matrix-synapse</code> package in the Debian repositories.
+<p>Andrej Shadura maintains a
+<a href="https://packages.debian.org/sid/matrix-synapse"><code>matrix-synapse</code></a> package in
+the Debian repositories.
For <code>bookworm</code> and <code>sid</code>, it can be installed simply with:</p>
<pre><code class="language-sh">sudo apt install matrix-synapse
</code></pre>
@@ -217,16 +219,18 @@ for information on how to use backports.</p>
<p><code>matrix-synapse</code> is no longer maintained for <code>buster</code> and older.</p>
<h5 id="downstream-ubuntu-packages"><a class="header" href="#downstream-ubuntu-packages">Downstream Ubuntu packages</a></h5>
<p>We do not recommend using the packages in the default Ubuntu repository
-at this time, as they are old and suffer from known security vulnerabilities.
+at this time, as they are <a href="https://bugs.launchpad.net/ubuntu/+source/matrix-synapse/+bug/1848709">old and suffer from known security vulnerabilities</a>.
The latest version of Synapse can be installed from <a href="#matrixorg-packages">our repository</a>.</p>
<h4 id="fedora"><a class="header" href="#fedora">Fedora</a></h4>
-<p>Synapse is in the Fedora repositories as <code>matrix-synapse</code>:</p>
+<p>Synapse is in the Fedora repositories as
+<a href="https://src.fedoraproject.org/rpms/matrix-synapse"><code>matrix-synapse</code></a>:</p>
<pre><code class="language-sh">sudo dnf install matrix-synapse
</code></pre>
-<p>Oleg Girko provides Fedora RPMs at
+<p>Additionally, Oleg Girko provides Fedora RPMs at
<a href="https://obs.infoserver.lv/project/monitor/matrix-synapse">https://obs.infoserver.lv/project/monitor/matrix-synapse</a></p>
<h4 id="opensuse"><a class="header" href="#opensuse">OpenSUSE</a></h4>
-<p>Synapse is in the OpenSUSE repositories as <code>matrix-synapse</code>:</p>
+<p>Synapse is in the OpenSUSE repositories as
+<a href="https://software.opensuse.org/package/matrix-synapse"><code>matrix-synapse</code></a>:</p>
<pre><code class="language-sh">sudo zypper install matrix-synapse
</code></pre>
<h4 id="suse-linux-enterprise-server"><a class="header" href="#suse-linux-enterprise-server">SUSE Linux Enterprise Server</a></h4>
@@ -247,7 +251,8 @@ installing under virtualenv):</p>
sudo pip install py-bcrypt
</code></pre>
<h4 id="void-linux"><a class="header" href="#void-linux">Void Linux</a></h4>
-<p>Synapse can be found in the void repositories as 'synapse':</p>
+<p>Synapse can be found in the void repositories as
+<a href="https://github.com/void-linux/void-packages/tree/master/srcpkgs/synapse">'synapse'</a>:</p>
<pre><code class="language-sh">xbps-install -Su
xbps-install -S synapse
</code></pre>
@@ -331,18 +336,19 @@ header files for Python C extensions.</p>
<p>Installing prerequisites on Ubuntu or Debian:</p>
<pre><code class="language-sh">sudo apt install build-essential python3-dev libffi-dev \
python3-pip python3-setuptools sqlite3 \
- libssl-dev virtualenv libjpeg-dev libxslt1-dev
+ libssl-dev virtualenv libjpeg-dev libxslt1-dev libicu-dev
</code></pre>
<h5 id="archlinux-1"><a class="header" href="#archlinux-1">ArchLinux</a></h5>
<p>Installing prerequisites on ArchLinux:</p>
<pre><code class="language-sh">sudo pacman -S base-devel python python-pip \
- python-setuptools python-virtualenv sqlite3
+ python-setuptools python-virtualenv sqlite3 icu
</code></pre>
<h5 id="centosfedora"><a class="header" href="#centosfedora">CentOS/Fedora</a></h5>
<p>Installing prerequisites on CentOS or Fedora Linux:</p>
<pre><code class="language-sh">sudo dnf install libtiff-devel libjpeg-devel libzip-devel freetype-devel \
libwebp-devel libxml2-devel libxslt-devel libpq-devel \
- python3-virtualenv libffi-devel openssl-devel python3-devel
+ python3-virtualenv libffi-devel openssl-devel python3-devel \
+ libicu-devel
sudo dnf groupinstall "Development Tools"
</code></pre>
<h5 id="macos"><a class="header" href="#macos">macOS</a></h5>
@@ -350,8 +356,10 @@ sudo dnf groupinstall "Development Tools"
<p>You may need to install the latest Xcode developer tools:</p>
<pre><code class="language-sh">xcode-select --install
</code></pre>
-<p>On ARM-based Macs you may need to install libjpeg and libpq.
-You can use Homebrew (https://brew.sh):</p>
+<p>Some extra dependencies may be needed. You can use Homebrew (https://brew.sh) for them.</p>
+<p>You may need to install icu, and make the icu binaries and libraries accessible.
+Please follow <a href="https://pypi.org/project/PyICU/">the official instructions of PyICU</a> to do so.</p>
+<p>On ARM-based Macs you may also need to install libjpeg and libpq:</p>
<pre><code class="language-sh"> brew install jpeg libpq
</code></pre>
<p>On macOS Catalina (10.15) you may need to explicitly install OpenSSL
@@ -364,7 +372,8 @@ export CPPFLAGS="-I/usr/local/opt/openssl/include"
<p>Installing prerequisites on openSUSE:</p>
<pre><code class="language-sh">sudo zypper in -t pattern devel_basis
sudo zypper in python-pip python-setuptools sqlite3 python-virtualenv \
- python-devel libffi-devel libopenssl-devel libjpeg62-devel
+ python-devel libffi-devel libopenssl-devel libjpeg62-devel \
+ libicu-devel
</code></pre>
<h5 id="openbsd-1"><a class="header" href="#openbsd-1">OpenBSD</a></h5>
<p>A port of Synapse is available under <code>net/synapse</code>. The filesystem
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