diff --git a/asn1/RSPRO.asn b/asn1/RSPRO.asn
index b530887..75a36c7 100644
--- a/asn1/RSPRO.asn
+++ b/asn1/RSPRO.asn
@@ -151,6 +151,7 @@ ConnectBankRes ::= SEQUENCE {
 ConnectClientReq ::= SEQUENCE {
 	-- identity of the client that is connecting to the server/bankd
 	identity	ComponentIdentity,
+	clientId	ClientId OPTIONAL, -- old identity, if any
 	...
 }
 ConnectClientRes ::= SEQUENCE {
diff --git a/include/osmocom/rspro/ConnectClientReq.h b/include/osmocom/rspro/ConnectClientReq.h
index 16eebec..46c2d0e 100644
--- a/include/osmocom/rspro/ConnectClientReq.h
+++ b/include/osmocom/rspro/ConnectClientReq.h
@@ -12,6 +12,7 @@
 
 /* Including external dependencies */
 #include <osmocom/rspro/ComponentIdentity.h>
+#include <osmocom/rspro/ClientId.h>
 #include <constr_SEQUENCE.h>
 
 #ifdef __cplusplus
@@ -21,6 +22,7 @@ extern "C" {
 /* ConnectClientReq */
 typedef struct ConnectClientReq {
 	ComponentIdentity_t	 identity;
+	ClientId_t	*clientId	/* OPTIONAL */;
 	/*
 	 * This type is extensible,
 	 * possible extensions are below.
diff --git a/src/rspro/ConnectClientReq.c b/src/rspro/ConnectClientReq.c
index 84decb3..7b83b19 100644
--- a/src/rspro/ConnectClientReq.c
+++ b/src/rspro/ConnectClientReq.c
@@ -16,21 +16,31 @@ static asn_TYPE_member_t asn_MBR_ConnectClientReq_1[] = {
 		0,
 		"identity"
 		},
+	{ ATF_POINTER, 1, offsetof(struct ConnectClientReq, clientId),
+		(ASN_TAG_CLASS_UNIVERSAL | (2 << 2)),
+		0,
+		&asn_DEF_ClientId,
+		0,	/* Defer constraints checking to the member type */
+		0,	/* PER is not compiled, use -gen-PER */
+		0,
+		"clientId"
+		},
 };
 static const ber_tlv_tag_t asn_DEF_ConnectClientReq_tags_1[] = {
 	(ASN_TAG_CLASS_UNIVERSAL | (16 << 2))
 };
 static const asn_TYPE_tag2member_t asn_MAP_ConnectClientReq_tag2el_1[] = {
+    { (ASN_TAG_CLASS_UNIVERSAL | (2 << 2)), 1, 0, 0 }, /* clientId */
     { (ASN_TAG_CLASS_UNIVERSAL | (16 << 2)), 0, 0, 0 } /* identity */
 };
 static asn_SEQUENCE_specifics_t asn_SPC_ConnectClientReq_specs_1 = {
 	sizeof(struct ConnectClientReq),
 	offsetof(struct ConnectClientReq, _asn_ctx),
 	asn_MAP_ConnectClientReq_tag2el_1,
-	1,	/* Count of tags in the map */
+	2,	/* Count of tags in the map */
 	0, 0, 0,	/* Optional elements (not needed) */
-	0,	/* Start extensions */
-	2	/* Stop extensions */
+	1,	/* Start extensions */
+	3	/* Stop extensions */
 };
 asn_TYPE_descriptor_t asn_DEF_ConnectClientReq = {
 	"ConnectClientReq",
@@ -53,7 +63,7 @@ asn_TYPE_descriptor_t asn_DEF_ConnectClientReq = {
 		/sizeof(asn_DEF_ConnectClientReq_tags_1[0]), /* 1 */
 	0,	/* No PER visible constraints */
 	asn_MBR_ConnectClientReq_1,
-	1,	/* Elements count */
+	2,	/* Elements count */
 	&asn_SPC_ConnectClientReq_specs_1	/* Additional specs */
 };