diff --git a/dns/idnkit/pkg-descr b/dns/idnkit/pkg-descr
index ced1c3744fdb..b98dab260925 100644
--- a/dns/idnkit/pkg-descr
+++ b/dns/idnkit/pkg-descr
@@ -14,4 +14,4 @@ are as follows.
     * BIND 9 patch
       IDN enhancements for BIND 9 DNS lookup tools.
 
-WWW: http://www.nic.ad.jp/ja/idn/idnkit/download/
+WWW: https://www.nic.ad.jp/ja/idn/idnkit/download/