diff --git a/_includes/manuals/3.10/2.1_quickstart_installation.md b/_includes/manuals/3.10/2.1_quickstart_installation.md
index 8d1bc5f096..95c4f1a636 100644
--- a/_includes/manuals/3.10/2.1_quickstart_installation.md
+++ b/_includes/manuals/3.10/2.1_quickstart_installation.md
@@ -25,6 +25,7 @@ To provide specific installation instructions, please select your operating syst
 <select onChange="update_quickstart_os(this);">
   <option value="none">-- select operating system --</option>
   <option value="el8">Enterprise Linux 8</option>
+  <option value="el9">Enterprise Linux 9</option>
   <option value="debian11">Debian 11 (Bullseye)</option>
   <option value="ubuntu2004">Ubuntu 20.04 (Focal)</option>
 </select>
@@ -45,6 +46,16 @@ sudo dnf -y install https://yum.puppet.com/puppet7-release-el-8.noarch.rpm
 {% endhighlight %}
 </div>
 
+<div class="quickstart_os quickstart_os_el9">
+  <p>
+    Enable Puppet's 7.x repository:
+  </p>
+
+{% highlight bash %}
+sudo dnf -y install https://yum.puppet.com/puppet7-release-el-9.noarch.rpm
+{% endhighlight %}
+</div>
+
 <div class="quickstart_os quickstart_os_el8">
   <p>Enable the Foreman repositories:</p>
 
@@ -53,6 +64,14 @@ sudo dnf -y install https://yum.theforeman.org/releases/{{page.version}}/el8/x86
 {% endhighlight %}
 </div>
 
+<div class="quickstart_os quickstart_os_el9">
+  <p>Enable the Foreman repositories:</p>
+
+{% highlight bash %}
+sudo dnf -y install https://yum.theforeman.org/releases/{{page.version}}/el9/x86_64/foreman-release.rpm
+{% endhighlight %}
+</div>
+
 <div class="quickstart_os quickstart_os_el8">
   <p>Enable the Foreman module:</p>
 
@@ -107,7 +126,7 @@ echo "deb http://deb.theforeman.org/ plugins {{page.version}}" | sudo tee -a /et
   <i>No operating system selected.</i>
 </div>
 
-<div class="quickstart_os quickstart_os_el8">
+<div class="quickstart_os quickstart_os_el8 quickstart_os_el9">
 {% highlight bash %}
 sudo dnf -y install foreman-installer
 {% endhighlight %}
@@ -127,7 +146,7 @@ sudo apt-get update && sudo apt-get -y install foreman-installer
 
 The installation run is non-interactive, but the configuration can be customized by supplying any of the options listed in `foreman-installer --help`, or by running `foreman-installer -i` for interactive mode.  More examples are given in the [Installation Options](/manuals/{{page.version}}/index.html#3.2.2InstallerOptions) section.  Adding `-v` will disable the progress bar and display all changes.  To run the installer, execute:
 
-<div class="quickstart_os quickstart_os_none quickstart_os_debian11 quickstart_os_ubuntu2004 quickstart_os_el8">
+<div class="quickstart_os quickstart_os_none quickstart_os_debian11 quickstart_os_ubuntu2004 quickstart_os_el8 quickstart_os_el9">
 {% highlight bash %}
 sudo foreman-installer
 {% endhighlight %}
diff --git a/_includes/manuals/3.10/2_quickstart_guide.md b/_includes/manuals/3.10/2_quickstart_guide.md
index 82396f4078..1674769c38 100644
--- a/_includes/manuals/3.10/2_quickstart_guide.md
+++ b/_includes/manuals/3.10/2_quickstart_guide.md
@@ -8,9 +8,10 @@ The installation will require 4GB of memory, see [System Requirements](manuals/{
 #### Supported platforms
 
 * Enterprise Linux 8, x86_64
+* Enterprise Linux 9, x86_64
 * Debian 11 (Bullseye), amd64
 * Ubuntu 20.04 (Focal), amd64
 
 #### Enterprise Linux
 
-The Foreman packages and installer are tested on AlmaLinux 8 and CentOS 8 Stream, but other RHEL derivatives can work because they're similar. Sometimes additional work may be needed. For any queries for these platforms raise a question in [discourse support section](https://community.theforeman.org/c/support/10)
+The Foreman packages and installer are tested on AlmaLinux 8, AlmaLinux 9, CentOS Stream 8 and CentOS Stream 9, but other RHEL derivatives can work because they're similar. Sometimes additional work may be needed. For any queries for these platforms raise a question in [discourse support section](https://community.theforeman.org/c/support/10)
diff --git a/_includes/manuals/3.10/3.1.1_supported_platforms.md b/_includes/manuals/3.10/3.1.1_supported_platforms.md
index 343c2d051a..0ac45896ed 100644
--- a/_includes/manuals/3.10/3.1.1_supported_platforms.md
+++ b/_includes/manuals/3.10/3.1.1_supported_platforms.md
@@ -3,11 +3,19 @@ The following operating systems are supported by the installer, have packages an
 * Red Hat Enterprise Linux 8
   * Architectures: x86_64 only
   * Apply all SELinux-related errata.
-* CentOS 8 Stream
+* Red Hat Enterprise Linux 9
+  * Architectures: x86_64 only
+  * Apply all SELinux-related errata.
+* CentOS Stream 8
   * Architectures: x86_64 only
   * **Note:**
-    - The RPM packages are built on CentOS Linux 8, but tested to work also on CentOS 8 Stream
+    - The RPM packages are built on Red Hat Enterprise Linux 8, but tested to work also on CentOS Stream 8
     - EPEL 8 is incompatible, enabling will cause package dependency issue.
+* CentOS Stream 9
+  * Architectures: x86_64 only
+  * **Note:**
+    - The RPM packages are built on Red Hat Enterprise Linux 9, but tested to work also on CentOS Stream 9
+    - EPEL 9 is incompatible, enabling will cause package dependency issue.
 * Ubuntu 20.04 (Focal)
   * Architectures: amd64
 * Debian 11 (Bullseye)
diff --git a/_includes/manuals/3.10/3.3.1_rpm_packages.md b/_includes/manuals/3.10/3.3.1_rpm_packages.md
index 65592bf246..9a2165ae7b 100644
--- a/_includes/manuals/3.10/3.3.1_rpm_packages.md
+++ b/_includes/manuals/3.10/3.3.1_rpm_packages.md
@@ -2,6 +2,7 @@
 Foreman is packaged for the following RPM based distributions:
 
 * RHEL and derivatives, version 8
+* RHEL and derivatives, version 9
 
 **Note:** The RPM packages are not tested on Rocky Linux or Oracle Linux. The Foreman installation on Rocky Linux or Oracle Linux may or may not work.
 
@@ -28,6 +29,9 @@ To set up the repository, foreman-release packages are provided which add a repo
     # EL8
     dnf -y install https://yum.theforeman.org/releases/{{page.version}}/el8/x86_64/foreman-release.rpm
     dnf -y module enable foreman:el8
+    
+    # EL9
+    dnf -y install https://yum.theforeman.org/releases/{{page.version}}/el9/x86_64/foreman-release.rpm
 
 ### Signing