diff --git a/pkgs/development/python-modules/jupyterlab_server/default.nix b/pkgs/development/python-modules/jupyterlab_server/default.nix
index 9185c2940060..0344a66cf663 100644
--- a/pkgs/development/python-modules/jupyterlab_server/default.nix
+++ b/pkgs/development/python-modules/jupyterlab_server/default.nix
@@ -11,12 +11,12 @@
 
 buildPythonPackage rec {
   pname = "jupyterlab_server";
-  version = "1.1.5";
+  version = "1.2.0";
   disabled = pythonOlder "3.5";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "3398e401b95da868bc96bdaa44fa61252bf3e68fc9dd1645bd93293cce095f6c";
+    sha256 = "5431d9dde96659364b7cc877693d5d21e7b80cea7ae3959ecc2b87518e5f5d8c";
   };
 
   checkInputs = [ requests pytest ];