diff --git a/libcoap-1.map b/libcoap-1.map
index 44cb3e19..18eee976 100644
--- a/libcoap-1.map
+++ b/libcoap-1.map
@@ -125,6 +125,7 @@ global:
   coap_pdu_parse_header_size;
   coap_pdu_parse_opt;
   coap_pdu_parse_size;
+  coap_pdu_resize;
   coap_peek_next;
   coap_pop_next;
   coap_print_addr;
@@ -186,6 +187,7 @@ global:
   coap_ticks_from_rt_us;
   coap_ticks_to_rt;
   coap_ticks_to_rt_us;
+  coap_tls_free_session;
   coap_tls_is_supported;
   coap_tls_new_client_session;
   coap_tls_new_server_session;
diff --git a/libcoap-1.sym b/libcoap-1.sym
index 2f6c5247..1ad76f30 100644
--- a/libcoap-1.sym
+++ b/libcoap-1.sym
@@ -123,6 +123,7 @@ coap_pdu_parse_header
 coap_pdu_parse_header_size
 coap_pdu_parse_opt
 coap_pdu_parse_size
+coap_pdu_resize
 coap_peek_next
 coap_pop_next
 coap_print_addr
@@ -184,6 +185,7 @@ coap_ticks
 coap_ticks_from_rt_us
 coap_ticks_to_rt
 coap_ticks_to_rt_us
+coap_tls_free_session
 coap_tls_is_supported
 coap_tls_new_client_session
 coap_tls_new_server_session