diff --git a/include/osmocom/gsm/gsup.h b/include/osmocom/gsm/gsup.h
index 56d7a30..6e7fcf0 100644
--- a/include/osmocom/gsm/gsup.h
+++ b/include/osmocom/gsm/gsup.h
@@ -198,6 +198,10 @@
 	OSMO_GSUP_MSGT_E_ABORT					= 0b01001011,
 
 	OSMO_GSUP_MSGT_ROUTING_ERROR				= 0b01001110,
+
+	OSMO_GSUP_MSGT_EPDG_TUNNEL_REQUEST			= 0b01010000,
+	OSMO_GSUP_MSGT_EPDG_TUNNEL_ERROR			= 0b01010001,
+	OSMO_GSUP_MSGT_EPDG_TUNNEL_RESULT			= 0b01010010,
 };
 
 #define OSMO_GSUP_MSGT_E_ROUTING_ERROR OSMO_GSUP_MSGT_ROUTING_ERROR
@@ -281,6 +285,7 @@
 	OSMO_GSUP_MESSAGE_CLASS_SMS = 2,
 	OSMO_GSUP_MESSAGE_CLASS_USSD = 3,
 	OSMO_GSUP_MESSAGE_CLASS_INTER_MSC = 4,
+	OSMO_GSUP_MESSAGE_CLASS_IPSEC_EPDG = 5,
 	/* Keep this as last entry with a value of max(enum osmo_gsup_message_class) + 1.
 	 * This value shall serve as the size for an array to aid de-muxing all known GSUP classes. */
 	OSMO_GSUP_MESSAGE_CLASS_ARRAYSIZE
diff --git a/src/gsm/gsup.c b/src/gsm/gsup.c
index ef33ed0..4e09ac8 100644
--- a/src/gsm/gsup.c
+++ b/src/gsm/gsup.c
@@ -103,6 +103,10 @@
 
 	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_ROUTING_ERROR),
 
+	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_EPDG_TUNNEL_REQUEST),
+	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_EPDG_TUNNEL_RESULT),
+	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_EPDG_TUNNEL_ERROR),
+
 	{ 0, NULL }
 };
 
@@ -911,6 +915,7 @@
 	{ OSMO_GSUP_MESSAGE_CLASS_SMS, "SMS" },
 	{ OSMO_GSUP_MESSAGE_CLASS_USSD, "USSD" },
 	{ OSMO_GSUP_MESSAGE_CLASS_INTER_MSC, "Inter-MSC" },
+	{ OSMO_GSUP_MESSAGE_CLASS_IPSEC_EPDG, "IPsec-ePDG" },
 	{}
 };