diff --git a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
index 78606c6a9091..b3856142cecd 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2205.section.xml
@@ -70,6 +70,14 @@
           and their users.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          The default GHC version has been updated from 8.10.7 to 9.0.2.
+          <literal>pkgs.haskellPackages</literal> and
+          <literal>pkgs.ghc</literal> will now use this version by
+          default.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
   <section xml:id="sec-release-22.05-new-services">
diff --git a/nixos/doc/manual/release-notes/rl-2205.section.md b/nixos/doc/manual/release-notes/rl-2205.section.md
index acb817d31a86..815e791d63e5 100644
--- a/nixos/doc/manual/release-notes/rl-2205.section.md
+++ b/nixos/doc/manual/release-notes/rl-2205.section.md
@@ -23,6 +23,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - Module authors can use `mkRenamedOptionModuleWith` to automate the deprecation cycle without annoying out-of-tree module authors and their users.
 
+- The default GHC version has been updated from 8.10.7 to 9.0.2. `pkgs.haskellPackages` and `pkgs.ghc` will now use this version by default.
+
 ## New Services {#sec-release-22.05-new-services}
 
 - [aesmd](https://github.com/intel/linux-sgx#install-the-intelr-sgx-psw), the Intel SGX Architectural Enclave Service Manager. Available as [services.aesmd](#opt-services.aesmd.enable).