diff --git a/src/libosmocc/endpoint.c b/src/libosmocc/endpoint.c
index 29a3003..cb591b8 100644
--- a/src/libosmocc/endpoint.c
+++ b/src/libosmocc/endpoint.c
@@ -568,6 +568,18 @@ static void notify_ind(osmo_cc_call_t *call, osmo_cc_msg_t *msg)
 	forward_to_ul(call, msg);
 }
 
+static void update_req(osmo_cc_call_t *call, osmo_cc_msg_t *msg)
+{
+	/* to lower layer */
+	forward_to_ll(call, msg);
+}
+
+static void update_cnf(osmo_cc_call_t *call, osmo_cc_msg_t *msg)
+{
+	/* to upper layer */
+	forward_to_ul(call, msg);
+}
+
 static void disc_req(osmo_cc_call_t *call, osmo_cc_msg_t *msg)
 {
 	/* change state */
@@ -853,6 +865,10 @@ static struct statemachine {
 	 OSMO_CC_MSG_INFO_IND, info_ind},
 	{SBIT(OSMO_CC_STATE_ACTIVE),
 	 OSMO_CC_MSG_INFO_REQ, info_req},
+	{SBIT(OSMO_CC_STATE_ACTIVE),
+	 OSMO_CC_MSG_UPDATE_REQ, update_req},
+	{SBIT(OSMO_CC_STATE_ACTIVE),
+	 OSMO_CC_MSG_UPDATE_CNF, update_cnf},
 
 	/* call release */
 	{SBIT(OSMO_CC_STATE_INIT_OUT) | SBIT(OSMO_CC_STATE_INIT_IN) |
diff --git a/src/libosmocc/message.h b/src/libosmocc/message.h
index 2bb299a..8f4d487 100644
--- a/src/libosmocc/message.h
+++ b/src/libosmocc/message.h
@@ -30,6 +30,8 @@ enum osmo_cc_msg_type {
 	OSMO_CC_MSG_NOTIFY_IND =	0x85,
 	OSMO_CC_MSG_INFO_REQ =		0x88,
 	OSMO_CC_MSG_INFO_IND =		0x89,
+	OSMO_CC_MSG_UPDATE_REQ =	0x91,
+	OSMO_CC_MSG_UPDATE_CNF =	0x93,
 	OSMO_CC_MSG_ATTACH_REQ =	0xf8,
 	OSMO_CC_MSG_ATTACH_IND =	0xf9,
 	OSMO_CC_MSG_ATTACH_RSP =	0xfa,