diff --git a/pkgs/development/python-modules/jupyterlab/default.nix b/pkgs/development/python-modules/jupyterlab/default.nix
index ece3b4e3ed5c7..55ade7db9caae 100644
--- a/pkgs/development/python-modules/jupyterlab/default.nix
+++ b/pkgs/development/python-modules/jupyterlab/default.nix
@@ -8,12 +8,12 @@
 
 buildPythonPackage rec {
   pname = "jupyterlab";
-  version = "1.2.5";
+  version = "1.2.6";
   disabled = pythonOlder "3.5";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "086zl3pdsq2jwcxv7ppp3lpwh25mgnn0y0s6scmkrz158yj55kp3";
+    sha256 = "0mc3nrj7fc5q2ajr09m261j386jsp8qjljg8anghlh8czc9ln4s2";
   };
 
   propagatedBuildInputs = [ jupyterlab_server notebook ];