diff --git a/pkgs/development/python-modules/jsonrpc-websocket/default.nix b/pkgs/development/python-modules/jsonrpc-websocket/default.nix
index df5216bdd1a..723c170ce7e 100644
--- a/pkgs/development/python-modules/jsonrpc-websocket/default.nix
+++ b/pkgs/development/python-modules/jsonrpc-websocket/default.nix
@@ -3,11 +3,11 @@
 
 buildPythonPackage rec {
   pname = "jsonrpc-websocket";
-  version = "1.1.0";
+  version = "1.2.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "029gxp6f06gmba7glxfdz5xfhs5kkqph7x78k38qqvdrmca4z450";
+    sha256 = "c343d057b572791ed3107b771c17358bc710772a9a6156047a3cfafb409ed895";
   };
 
   nativeBuildInputs = [ pep8 ];