diff --git a/pkgs/development/python-modules/sse-starlette/default.nix b/pkgs/development/python-modules/sse-starlette/default.nix
index 2cea19d5da08..08691d5c5e2e 100644
--- a/pkgs/development/python-modules/sse-starlette/default.nix
+++ b/pkgs/development/python-modules/sse-starlette/default.nix
@@ -22,7 +22,7 @@
 
 buildPythonPackage rec {
   pname = "sse-starlette";
-  version = "2.3.3";
+  version = "2.3.5";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     owner = "sysid";
     repo = "sse-starlette";
     tag = "v${version}";
-    hash = "sha256-dflXjMOFBnQI794iK8o55oFxpuuBP+26suOZzqzLD/Q=";
+    hash = "sha256-KTq8NwV4YhyfTLpsaF5jyrD3kyBcJ/xXtOwx4WvDFOo=";
   };
 
   build-system = [ setuptools ];