diff --git a/pkgs/development/python-modules/caldav/default.nix b/pkgs/development/python-modules/caldav/default.nix
index 6d63948032ef..e6835896bd1a 100644
--- a/pkgs/development/python-modules/caldav/default.nix
+++ b/pkgs/development/python-modules/caldav/default.nix
@@ -1,8 +1,10 @@
 {
   lib,
   buildPythonPackage,
+  dnspython,
   fetchFromGitHub,
   icalendar,
+  icalendar-searcher,
   lxml,
   manuel,
   pytestCheckHook,
@@ -23,14 +25,14 @@
 
 buildPythonPackage rec {
   pname = "caldav";
-  version = "2.1.0";
+  version = "2.2.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "python-caldav";
     repo = "caldav";
     tag = "v${version}";
-    hash = "sha256-iVM3dBG2CNaMOUlEM0nGVKYUZHfX0LKjars7HJ1QWC0=";
+    hash = "sha256-FsIF4BcwAUyYw8J7o4j4CnSd8eIc1Yd5WtxErC6RZ7Y=";
   };
 
   build-system = [
@@ -39,9 +41,11 @@ buildPythonPackage rec {
   ];
 
   dependencies = [
+    dnspython
     lxml
     requests
     icalendar
+    icalendar-searcher
     recurring-ical-events
   ];
 
@@ -57,6 +61,11 @@ buildPythonPackage rec {
     (toPythonModule (xandikos.override { python3Packages = python.pkgs; }))
   ];
 
+  disabledTests = [
+    # test contacts CalDAV servers on the internet
+    "test_rfc8764_test_conf"
+  ];
+
   pythonImportsCheck = [ "caldav" ];
 
   meta = with lib; {