diff --git a/pkgs/by-name/kh/khal/package.nix b/pkgs/by-name/kh/khal/package.nix
index ffc0c69aeb52..974d71af3065 100644
--- a/pkgs/by-name/kh/khal/package.nix
+++ b/pkgs/by-name/kh/khal/package.nix
@@ -4,48 +4,22 @@
   fetchFromGitHub,
   glibcLocales,
   installShellFiles,
-  python3,
+  python3Packages,
 }:
 
-let
-  python = python3.override {
-    packageOverrides = self: super: {
-      # https://github.com/pimutils/khal/issues/1361
-      icalendar = super.icalendar.overridePythonAttrs (old: rec {
-        version = "5.0.13";
-        src = fetchFromGitHub {
-          owner = "collective";
-          repo = "icalendar";
-          tag = "v${version}";
-          hash = "sha256-2gpWfLXR4HThw23AWxY2rY9oiK6CF3Qiad8DWHCs4Qk=";
-        };
-        patches = [ ];
-        build-system = with self; [ setuptools ];
-        dependencies = with self; [
-          python-dateutil
-          pytz
-        ];
-      });
-    };
-  };
-in
-python.pkgs.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "khal";
-  version = "0.11.3";
+  version = "0.13.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pimutils";
     repo = "khal";
     tag = "v${version}";
-    hash = "sha256-YP2kQ/qXPDwvFvlHf+A2Ymvk49dmt5tAnTaOhrOV92M=";
+    hash = "sha256-pbBdScyYQMdT2NjCk2dKPkR75Zcizzco2IkXpHkgPR8=";
   };
 
-  postPatch = ''
-    sed -i /intersphinx/d doc/source/conf.py
-  '';
-
-  build-system = with python.pkgs; [
+  build-system = with python3Packages; [
     setuptools
     setuptools-scm
   ];
@@ -55,8 +29,7 @@ python.pkgs.buildPythonApplication rec {
     installShellFiles
   ];
 
-  dependencies = with python.pkgs; [
-    atomicwrites
+  dependencies = with python3Packages; [
     click
     click-log
     configobj
@@ -73,7 +46,7 @@ python.pkgs.buildPythonApplication rec {
     urwid
   ];
 
-  nativeCheckInputs = with python.pkgs; [
+  nativeCheckInputs = with python3Packages; [
     freezegun
     hypothesis
     packaging
@@ -90,7 +63,7 @@ python.pkgs.buildPythonApplication rec {
 
     # man page
     PATH="${
-      python3.withPackages (
+      python3Packages.python.withPackages (
         ps: with ps; [
           sphinx
           sphinxcontrib-newsfeed
@@ -120,6 +93,6 @@ python.pkgs.buildPythonApplication rec {
     homepage = "https://lostpackets.de/khal/";
     changelog = "https://github.com/pimutils/khal/releases/tag/v${version}";
     license = lib.licenses.mit;
-    maintainers = with lib.maintainers; [ ];
+    maintainers = with lib.maintainers; [ antonmosich ];
   };
 }