diff --git a/.mkosi/mkosi.arch b/.mkosi/mkosi.arch
index a823a95e70..d7f6bc866a 100644
--- a/.mkosi/mkosi.arch
+++ b/.mkosi/mkosi.arch
@@ -50,7 +50,7 @@ BuildPackages=
         kmod
         libcap
         libgcrypt
-        libidn
+        libidn2
         libmicrohttpd
         libseccomp
         libtool
@@ -66,7 +66,6 @@ BuildPackages=
         python-lxml
         qrencode
         xz
-# TODO use libidn2 once it's available in official repositories
 
 Packages=
-        libidn
+        libidn2