diff --git a/pkgs/development/python-modules/pymodbus/default.nix b/pkgs/development/python-modules/pymodbus/default.nix
index 0214eae7ddc0..1be0a2a6731c 100644
--- a/pkgs/development/python-modules/pymodbus/default.nix
+++ b/pkgs/development/python-modules/pymodbus/default.nix
@@ -21,14 +21,14 @@
 
 buildPythonPackage rec {
   pname = "pymodbus";
-  version = "3.11.2";
+  version = "3.11.3";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pymodbus-dev";
     repo = "pymodbus";
     tag = "v${version}";
-    hash = "sha256-xfulpF6NrHM+qJZSlTW4Wb0GqYXQytepyB6bjy2eI9Y=";
+    hash = "sha256-2wOeghoi8FSk1II/0rid+ddRq7ceerH7ZeLcb+SSXKY=";
   };
 
   __darwinAllowLocalNetworking = true;