diff --git a/nix/pkgs/datez/default.nix b/nix/pkgs/datez/default.nix
index 86de2146d1..511483189a 100644
--- a/nix/pkgs/datez/default.nix
+++ b/nix/pkgs/datez/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, rustPlatform }:
+{ lib, fetchFromGitHub, rustPlatform, libiconv }:
 
 rustPlatform.buildRustPackage rec {
   pname = "datez";
@@ -16,6 +16,10 @@ rustPlatform.buildRustPackage rec {
     cp ${./Cargo.lock} Cargo.lock
   '';
 
+  buildInputs = [
+    libiconv
+  ];
+
   meta = with lib; {
     description = "Convert a time into several timezones";
     homepage = "https://github.com/fanf2/datez";