diff --git a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
index 88d075a9a482..4525706f826a 100644
--- a/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
+++ b/nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
@@ -523,6 +523,12 @@
           2020 to 2021
         </para>
       </listitem>
+      <listitem>
+        <para>
+          the <literal>mingw-64</literal> package has been upgraded from
+          6.0.0 to 9.0.0
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
   <section xml:id="sec-release-21.11-notable-changes">
diff --git a/nixos/doc/manual/release-notes/rl-2111.section.md b/nixos/doc/manual/release-notes/rl-2111.section.md
index f7275480ff81..e3afb1bb1b56 100644
--- a/nixos/doc/manual/release-notes/rl-2111.section.md
+++ b/nixos/doc/manual/release-notes/rl-2111.section.md
@@ -132,6 +132,8 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 - The `isabelle` package has been upgraded from 2020 to 2021
 
+- the `mingw-64` package has been upgraded from 6.0.0 to 9.0.0
+
 ## Other Notable Changes {#sec-release-21.11-notable-changes}
 
 - The setting [`services.openssh.logLevel`](options.html#opt-services.openssh.logLevel) `"VERBOSE"` `"INFO"`. This brings NixOS in line with upstream and other Linux distributions, and reduces log spam on servers due to bruteforcing botnets.
diff --git a/pkgs/os-specific/windows/mingw-w64/default.nix b/pkgs/os-specific/windows/mingw-w64/default.nix
index 0a342997530f..38293e65f70f 100644
--- a/pkgs/os-specific/windows/mingw-w64/default.nix
+++ b/pkgs/os-specific/windows/mingw-w64/default.nix
@@ -1,14 +1,14 @@
 { lib, stdenv, windows, fetchurl }:
 
 let
-  version = "6.0.0";
+  version = "9.0.0";
 in stdenv.mkDerivation {
   pname = "mingw-w64";
   inherit version;
 
   src = fetchurl {
     url = "mirror://sourceforge/mingw-w64/mingw-w64-v${version}.tar.bz2";
-    sha256 = "1w28mynv500y03h92nh87rgw3fnp82qwnjbxrrzqkmr63q812pl0";
+    sha256 = "10a15bi4lyfi0k0haj0klqambicwma6yi7vssgbz8prg815vja8r";
   };
 
   outputs = [ "out" "dev" ];