diff --git a/pkgs/development/python-modules/systembridgemodels/default.nix b/pkgs/development/python-modules/systembridgemodels/default.nix
index ee7945ee20b9..82d581ff3e1e 100644
--- a/pkgs/development/python-modules/systembridgemodels/default.nix
+++ b/pkgs/development/python-modules/systembridgemodels/default.nix
@@ -9,7 +9,7 @@
 
 buildPythonPackage rec {
   pname = "systembridgemodels";
-  version = "4.0.3";
+  version = "4.0.4";
   pyproject = true;
 
   disabled = pythonOlder "3.11";
@@ -18,12 +18,12 @@ buildPythonPackage rec {
     owner = "timmo001";
     repo = "system-bridge-models";
     rev = "refs/tags/${version}";
-    hash = "sha256-5rbj58E8iDu2Rjf0k9Y1UoF3hbN7ntkx6dm20HYpw6I=";
+    hash = "sha256-iFJ95ouhfbaC0D2Gkc1KO+JueYTFTOj1unnYSDyPAe8=";
   };
 
   postPatch = ''
     substituteInPlace systembridgemodels/_version.py \
-      --replace-fail ", dev=0" ""
+      --replace-fail ", dev=1" ""
   '';
 
   nativeBuildInputs = [