diff --git a/pkgs/development/python-modules/holidays/default.nix b/pkgs/development/python-modules/holidays/default.nix
index 79d49e654f9..10ee1bbf2e7 100644
--- a/pkgs/development/python-modules/holidays/default.nix
+++ b/pkgs/development/python-modules/holidays/default.nix
@@ -1,4 +1,11 @@
-{ stdenv, buildPythonPackage, fetchPypi, six, dateutil, convertdate }:
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, convertdate
+, dateutil
+, korean-lunar-calendar
+, six
+}:
 
 buildPythonPackage rec {
   pname = "holidays";
@@ -9,7 +16,13 @@ buildPythonPackage rec {
     sha256 = "839281f2b1ae7ac576da7951472482f6e714818296853107ea861fa60f5013cc";
   };
 
-  propagatedBuildInputs = [ six dateutil convertdate ];
+  propagatedBuildInputs = [
+    convertdate
+    dateutil
+    korean-lunar-calendar
+    six
+  ];
+  pythonImportsCheck = [ "holidays" ];
 
   meta = with stdenv.lib; {
     homepage = "https://github.com/dr-prodigy/python-holidays";