diff --git a/pkgs/development/python-modules/jupyter_server/default.nix b/pkgs/development/python-modules/jupyter_server/default.nix
index a8218138e36e..dee774e74cab 100644
--- a/pkgs/development/python-modules/jupyter_server/default.nix
+++ b/pkgs/development/python-modules/jupyter_server/default.nix
@@ -19,6 +19,7 @@
 , terminado
 , prometheus_client
 , anyio
+, websocket-client
 , requests
 }:
 
@@ -52,6 +53,7 @@ buildPythonPackage rec {
     terminado
     prometheus_client
     anyio
+    websocket-client
   ];
 
   checkInputs = [
@@ -80,7 +82,7 @@ buildPythonPackage rec {
   __darwinAllowLocalNetworking = true;
 
   meta = with lib; {
-    description = "The backend—i.e. core services, APIs, and REST endpoints—to Jupyter web applications.";
+    description = "The backend—i.e. core services, APIs, and REST endpoints—to Jupyter web applications";
     homepage = "https://github.com/jupyter-server/jupyter_server";
     license = licenses.bsdOriginal;
     maintainers = [ maintainers.elohmeier ];