diff --git a/pkgs/development/python-modules/ipykernel/default.nix b/pkgs/development/python-modules/ipykernel/default.nix
index 041818900978..f64b793b610b 100644
--- a/pkgs/development/python-modules/ipykernel/default.nix
+++ b/pkgs/development/python-modules/ipykernel/default.nix
@@ -13,11 +13,11 @@
 
 buildPythonPackage rec {
   pname = "ipykernel";
-  version = "6.3.0";
+  version = "6.4.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "5314690a638f893e2cc3bf3d25042920e9fbb873f7d8263033390264caeb95f4";
+    sha256 = "df3355e5eec23126bc89767a676c5f0abfc7f4c3497d118c592b83b316e8c0cd";
   };
 
   propagatedBuildInputs = [