diff --git a/share/dictionary/dhcpv4/dictionary b/share/dictionary/dhcpv4/dictionary
index 78e61552c41ee..52533e97604c2 100644
--- a/share/dictionary/dhcpv4/dictionary
+++ b/share/dictionary/dhcpv4/dictionary
@@ -61,6 +61,7 @@ $INCLUDE dictionary.rfc6153
 $INCLUDE dictionary.rfc6656
 $INCLUDE dictionary.rfc6926
 $INCLUDE dictionary.rfc7291
+$INCLUDE dictionary.rfc7710
 $INCLUDE dictionary.rfc7839
 $INCLUDE dictionary.rfc8357
 $INCLUDE dictionary.rfc8925
diff --git a/share/dictionary/dhcpv4/dictionary.rfc7710 b/share/dictionary/dhcpv4/dictionary.rfc7710
new file mode 100644
index 0000000000000..23d79c48f90c6
--- /dev/null
+++ b/share/dictionary/dhcpv4/dictionary.rfc7710
@@ -0,0 +1,13 @@
+# -*- text -*-
+# Copyright (C) 2022 The FreeRADIUS Server project and contributors
+# This work is licensed under CC-BY version 4.0 https://creativecommons.org/licenses/by/4.0
+# Version $Id$
+##############################################################################
+#
+#  RFC7710 - Captive-Portal Identification Using DHCP or Router Advertisements (RAs)
+#
+#  $Id$
+#
+##############################################################################
+
+ATTRIBUTE	Captive-Portal-URI		160	string