diff --git a/pkgs/development/python-modules/flask-socketio/default.nix b/pkgs/development/python-modules/flask-socketio/default.nix
index ea4bdf70885b..d9ee85ea9d5b 100644
--- a/pkgs/development/python-modules/flask-socketio/default.nix
+++ b/pkgs/development/python-modules/flask-socketio/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "flask-socketio";
-  version = "5.4.1";
+  version = "5.5.1";
   format = "pyproject";
 
   disabled = pythonOlder "3.6";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "miguelgrinberg";
     repo = "Flask-SocketIO";
     tag = "v${version}";
-    hash = "sha256-owlgbw0QBUz2wCBxd1rjMI+4nPVTZ6JgmU2tL+vIj5g=";
+    hash = "sha256-C/eNyvAfyu2oTBZUFvDhTZqyyB+aohAHDNzShqbD4O4=";
   };
 
   nativeBuildInputs = [ setuptools ];
@@ -43,7 +43,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Socket.IO integration for Flask applications";
     homepage = "https://github.com/miguelgrinberg/Flask-SocketIO/";
-    changelog = "https://github.com/miguelgrinberg/Flask-SocketIO/blob/v${version}/CHANGES.md";
+    changelog = "https://github.com/miguelgrinberg/Flask-SocketIO/blob/${src.tag}/CHANGES.md";
     license = licenses.mit;
     maintainers = with maintainers; [ mic92 ];
   };