diff --git a/nixos/doc/manual/release-notes/rl-2505.section.md b/nixos/doc/manual/release-notes/rl-2505.section.md
index 311d285a701d..5e5713e8fd78 100644
--- a/nixos/doc/manual/release-notes/rl-2505.section.md
+++ b/nixos/doc/manual/release-notes/rl-2505.section.md
@@ -454,6 +454,8 @@
 
 - `gerbera` now has wavpack support.
 
+- `ddclient` was updated from 3.11.2 to 4.0.0 [Release notes](https://github.com/ddclient/ddclient/releases/tag/v4.0.0)
+
 <!-- To avoid merge conflicts, consider adding your item at an arbitrary place in the list instead. -->
 
 ```{=include=} sections
diff --git a/pkgs/by-name/dd/ddclient/package.nix b/pkgs/by-name/dd/ddclient/package.nix
index 86847869864b..ff13221d3202 100644
--- a/pkgs/by-name/dd/ddclient/package.nix
+++ b/pkgs/by-name/dd/ddclient/package.nix
@@ -12,7 +12,7 @@ let
 in
 perlPackages.buildPerlPackage rec {
   pname = "ddclient";
-  version = "3.11.2";
+  version = "4.0.0";
 
   outputs = [ "out" ];
 
@@ -20,7 +20,7 @@ perlPackages.buildPerlPackage rec {
     owner = "ddclient";
     repo = "ddclient";
     rev = "v${version}";
-    sha256 = "sha256-d1G+AM28nBpMWh1QBjm78KKeOL5b5arxERYRCXohwBg=";
+    sha256 = "sha256-RCE24RKcW4EhicOTwgz5UE/gzqLxw+UNNk960vFx5Gs=";
   };
 
   postPatch = ''