diff --git a/net-dns/bind/Manifest b/net-dns/bind/Manifest
index 9aaa449..3fe831f 100644
--- a/net-dns/bind/Manifest
+++ b/net-dns/bind/Manifest
@@ -1 +1 @@
-DIST bind-9.18.18.tar.xz 5490428 BLAKE2B 7914351647f7b393535a337d4f3bb11e7dfe39e891a94803fec20538e1d4ac4b2c72407fec1138b6baa77e782d0a812d96f218108b54a381a4b0b8ccc2444ccd SHA512 8d94ec93915c776b9035bce2c3e707c6fb2fa526dbc3b08211c8265daa2c3c88bde51bec08dc416b5b7ba61604754846c4d1efa3f09eebd23847c417c9dc8760
+DIST bind-9.18.21.tar.xz 5507132 BLAKE2B 6b7e542d5b81d969e24bbce80578cad6dfc426e6ce4a9719184e19207f96419f7647dd1eeb2eab7503fa13f87786ad7bef98fcb587f021a7d281f5f1967525f1 SHA512 3cbc1775b6ca3d5eda0c277ab1246b5baa535dac53df3e60690aa7a2529bcb0fb644f7749b21b757870e5b3bc5f53ae9f0c0db182664de1b23f7e62c3fa8757d
diff --git a/net-dns/bind/bind-9.18.18.ebuild b/net-dns/bind/bind-9.18.21.ebuild
similarity index 98%
rename from net-dns/bind/bind-9.18.18.ebuild
rename to net-dns/bind/bind-9.18.21.ebuild
index 2a00cd3..786246e 100644
--- a/net-dns/bind/bind-9.18.18.ebuild
+++ b/net-dns/bind/bind-9.18.21.ebuild
@@ -133,7 +133,7 @@ src_install() {
 
 	# ftp://ftp.rs.internic.net/domain/named.cache:
 	insinto /var/bind
-	newins "${FILESDIR}"/named.cache-r3 named.cache
+	newins "${FILESDIR}"/named.cache-r4 named.cache
 
 	insinto /var/bind/pri
 	doins "${FILESDIR}"/redhat/named.{empty,localhost,loopback}
diff --git a/net-dns/bind/files/named.cache-r3 b/net-dns/bind/files/named.cache-r4
similarity index 93%
rename from net-dns/bind/files/named.cache-r3
rename to net-dns/bind/files/named.cache-r4
index 4fb2143..8b8a3b1 100644
--- a/net-dns/bind/files/named.cache-r3
+++ b/net-dns/bind/files/named.cache-r4
@@ -8,9 +8,9 @@
 ;           file                /domain/named.cache 
 ;           on server           FTP.INTERNIC.NET
 ;       -OR-                    RS.INTERNIC.NET
-; 
-;       last update:     November 16, 2017 
-;       related version of root zone:     2017111601
+;
+;       last update:     December 20, 2023
+;       related version of root zone:     2023122001
 ; 
 ; FORMERLY NS.INTERNIC.NET 
 ;
@@ -21,8 +21,8 @@ A.ROOT-SERVERS.NET.      3600000      AAAA  2001:503:ba3e::2:30
 ; FORMERLY NS1.ISI.EDU 
 ;
 .                        3600000      NS    B.ROOT-SERVERS.NET.
-B.ROOT-SERVERS.NET.      3600000      A     199.9.14.201
-B.ROOT-SERVERS.NET.      3600000      AAAA  2001:500:200::b
+B.ROOT-SERVERS.NET.      3600000      A     170.247.170.2
+B.ROOT-SERVERS.NET.      3600000      AAAA  2801:1b8:10::b
 ; 
 ; FORMERLY C.PSI.NET 
 ;