diff --git a/pkgs/development/python-modules/notebook/default.nix b/pkgs/development/python-modules/notebook/default.nix
index c7dc40d70791..435b4f13765f 100644
--- a/pkgs/development/python-modules/notebook/default.nix
+++ b/pkgs/development/python-modules/notebook/default.nix
@@ -27,12 +27,12 @@
 
 buildPythonPackage rec {
   pname = "notebook";
-  version = "6.3.0";
+  version = "6.4.0";
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "cbc9398d6c81473e9cdb891d2cae9c0d3718fca289dda6d26df5cb660fcadc7d";
+    sha256 = "9c4625e2a2aa49d6eae4ce20cbc3d8976db19267e32d2a304880e0c10bf8aef9";
   };
 
   LC_ALL = "en_US.utf8";