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 eb620a3e3edc..b0ebcb426edc 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
@@ -2013,6 +2013,16 @@ Superuser created successfully.
           file.
         </para>
       </listitem>
+      <listitem>
+        <para>
+          hydrus has been upgraded from version <literal>438</literal>
+          to <literal>463</literal>. Since upgrading between releases
+          this old is advised against, be sure to have a backup of your
+          data before upgrading. For details, see
+          <link xlink:href="https://hydrusnetwork.github.io/hydrus/help/getting_started_installing.html#big_updates">the
+          hydrus manual</link>.
+        </para>
+      </listitem>
     </itemizedlist>
   </section>
 </section>
diff --git a/nixos/doc/manual/release-notes/rl-2111.section.md b/nixos/doc/manual/release-notes/rl-2111.section.md
index c01514799038..f8a64f4cca31 100644
--- a/nixos/doc/manual/release-notes/rl-2111.section.md
+++ b/nixos/doc/manual/release-notes/rl-2111.section.md
@@ -547,3 +547,5 @@ In addition to numerous new and upgraded packages, this release has the followin
 - `julia` now refers to `julia-stable` instead of `julia-lts`. In practice this means it has been upgraded from `1.0.4` to `1.5.4`.
 
 - RetroArch has been upgraded from version `1.8.5` to `1.9.13.2`. Since the previous release was quite old, if you're having issues after the upgrade, please delete your `$XDG_CONFIG_HOME/retroarch/retroarch.cfg` file.
+
+- hydrus has been upgraded from version `438` to `463`. Since upgrading between releases this old is advised against, be sure to have a backup of your data before upgrading. For details, see [the hydrus manual](https://hydrusnetwork.github.io/hydrus/help/getting_started_installing.html#big_updates).
diff --git a/pkgs/applications/graphics/hydrus/default.nix b/pkgs/applications/graphics/hydrus/default.nix
index 3fce492a9932..787aace163b8 100644
--- a/pkgs/applications/graphics/hydrus/default.nix
+++ b/pkgs/applications/graphics/hydrus/default.nix
@@ -10,14 +10,14 @@
 
 python3Packages.buildPythonPackage rec {
   pname = "hydrus";
-  version = "462";
+  version = "463";
   format = "other";
 
   src = fetchFromGitHub {
     owner = "hydrusnetwork";
     repo = "hydrus";
     rev = "v${version}";
-    sha256 = "sha256-eHUztpnDs1kxaBlTO7BRbO3eH+On9m7aJtbNw2b9Ado=";
+    sha256 = "sha256-GT5aIMskOVn4eAd4612YYA8uAQC8tuJzpEHNhc7pMuc=";
   };
 
   nativeBuildInputs = [