diff --git a/include/coap/pdu.h b/include/coap/pdu.h
index 7ed482deee..2ac55b97e9 100644
--- a/include/coap/pdu.h
+++ b/include/coap/pdu.h
@@ -51,6 +51,9 @@
 #define COAP_REQUEST_POST      2
 #define COAP_REQUEST_PUT       3
 #define COAP_REQUEST_DELETE    4
+#define COAP_REQUEST_FETCH     5 /* RFC 8132 */
+#define COAP_REQUEST_PATCH     6 /* RFC 8132 */
+#define COAP_REQUEST_IPATCH    7 /* RFC 8132 */
 
 /* CoAP option types (be sure to update check_critical when adding options */
 
diff --git a/src/debug.c b/src/debug.c
index 87880c2903..cc611fe40c 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -271,7 +271,8 @@ msg_type_string(unsigned short t) {
 /** Returns a textual description of the method or response code. */
 static const char *
 msg_code_string(unsigned short c) {
-  static char *methods[] = { "0.00", "GET", "POST", "PUT", "DELETE", "PATCH" };
+  static char *methods[] = { "0.00", "GET", "POST", "PUT", "DELETE",
+                             "FETCH", "PATCH", "iPATCH" };
   static char buf[5];
 
   if (c < sizeof(methods)/sizeof(char *)) {