diff --git a/draft-ietf-httpbis-rfc6265bis.md b/draft-ietf-httpbis-rfc6265bis.md
index 4ae8fbbf9..a70fe3d1d 100644
--- a/draft-ietf-httpbis-rfc6265bis.md
+++ b/draft-ietf-httpbis-rfc6265bis.md
@@ -52,6 +52,7 @@ normative:
   RFC5890:
   RFC6454:
   RFC8126:
+  RFC8174:
   RFC9110:
      display: HTTP
   USASCII:
@@ -252,9 +253,11 @@ This document obsoletes {{RFC6265}}.
 
 ## Conformance Criteria
 
-The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
-"SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be
-interpreted as described in {{RFC2119}}.
+The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
+NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED",
+"MAY", and "OPTIONAL" in this document are to be interpreted as
+described in BCP 14 {{RFC2119}} {{RFC8174}} when, and only when, they
+appear in all capitals, as shown here.
 
 Requirements phrased in the imperative as part of algorithms (such as "strip any
 leading space characters" or "return false and abort these steps") are to be