diff --git a/CHANGES b/CHANGES
index e9c66f4a5b..0590b03243 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,5 @@
+3838.	[protocol]	EDNS EXPIRE as been assigned a code point of 9.
+
 3837.	[security]	A NULL pointer is passed to query_prefetch resulting
 			a REQUIRE assertion failure when a fetch is actually
 			initiated.  [ RT #35899]
diff --git a/lib/dns/include/dns/message.h b/lib/dns/include/dns/message.h
index 013411fcc4..de121c764d 100644
--- a/lib/dns/include/dns/message.h
+++ b/lib/dns/include/dns/message.h
@@ -106,9 +106,10 @@
 /*%< EDNS0 extended OPT codes */
 #define DNS_OPT_NSID		0x0003		/*%< NSID opt code */
 #define DNS_OPT_CLIENT_SUBNET	0x0008		/*%< client subnet opt code */
+#define DNS_OPT_EXPIRE		0x0009		/*%< EXPIRE opt code */
+
 /*%< Experimental options [65001...65534] as per RFC6891 */
 #define DNS_OPT_SIT		65001		/*%< SIT opt code */
-#define DNS_OPT_EXPIRE		65002		/*%< EXPIRE opt code */
 
 /*%< The number of EDNS options we know about. */
 #define DNS_EDNSOPTIONS	4