diff --git a/pkgs/development/python-modules/jupyterlab/default.nix b/pkgs/development/python-modules/jupyterlab/default.nix
index 23aaff8a728..f0bd058271a 100644
--- a/pkgs/development/python-modules/jupyterlab/default.nix
+++ b/pkgs/development/python-modules/jupyterlab/default.nix
@@ -1,12 +1,12 @@
 { lib, buildPythonPackage, isPy3k, fetchPypi, ipython_genutils, jupyterlab_launcher, notebook }:
 buildPythonPackage rec {
   pname = "jupyterlab";
-  version = "0.34.6";
+  version = "0.34.12";
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "d6e5a3855a0d55e6aa4ab704379da5da3db2e652442e79acfa2e9d14ef50ccb3";
+    sha256 = "7d8378d19a0ae173e91a493db996c37828b410b7ee556da21a153486168ecf87";
   };
 
   propagatedBuildInputs = [