diff --git a/pkgs/development/python-modules/ical/default.nix b/pkgs/development/python-modules/ical/default.nix
index f3b7641bb609..8cdc0383c22a 100644
--- a/pkgs/development/python-modules/ical/default.nix
+++ b/pkgs/development/python-modules/ical/default.nix
@@ -16,7 +16,7 @@
 
 buildPythonPackage rec {
   pname = "ical";
-  version = "4.2.0";
+  version = "4.2.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.9";
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     owner = "allenporter";
     repo = pname;
     rev = "refs/tags/${version}";
-    hash = "sha256-wDRvWpH06dvpFbiGisjcLLoUPvp1haGYcxayniCE3hQ=";
+    hash = "sha256-Ws5P6NTkqrJDSlKrmumdFg/Ud+DwlJafYR9ZOZXwV3M=";
   };
 
   propagatedBuildInputs = [