diff --git a/package/base-files/files/etc/protocols b/package/base-files/files/etc/protocols
index 53fecb6d3c..26bc775ed6 100644
--- a/package/base-files/files/etc/protocols
+++ b/package/base-files/files/etc/protocols
@@ -22,6 +22,7 @@ hmp	20	HMP		# host monitoring protocol
 xns-idp	22	XNS-IDP		# Xerox NS IDP
 rdp	27	RDP		# "reliable datagram" protocol
 iso-tp4	29	ISO-TP4		# ISO Transport Protocol class 4 [RFC905]
+dccp	33	DCCP		# Datagram Congestion Control Protocol [RFC4340]
 xtp	36	XTP		# Xpress Transfer Protocol
 ddp	37	DDP		# Datagram Delivery Protocol
 idpr-cmtp 38	IDPR-CMTP	# IDPR Control Message Transport