diff --git a/index.html b/index.html
index b824bc8..6081e4e 100644
--- a/index.html
+++ b/index.html
@@ -1845,6 +1845,11 @@ <h4>Operations</h4>
                 Section 5.1.6, with |message| as |M|,
                 using the Ed25519 private key associated with |key|.
               </p>
+              <p class="issue" data-number="28">
+                Some implementations may (wish to) generate randomized signatures
+                as per <a href="https://datatracker.ietf.org/doc/draft-irtf-cfrg-det-sigs-with-noise/">draft-irtf-cfrg-det-sigs-with-noise</a>
+                instead of deterministic signatures as per [[RFC8032]].
+              </p>
             </li>
             <li>
               <p>
@@ -2724,6 +2729,11 @@ <h4>Operations</h4>
                 and |context| as |C|,
                 using the Ed448 private key associated with |key|.
               </p>
+              <p class="issue" data-number="28">
+                Some implementations may (wish to) generate randomized signatures
+                as per <a href="https://datatracker.ietf.org/doc/draft-irtf-cfrg-det-sigs-with-noise/">draft-irtf-cfrg-det-sigs-with-noise</a>
+                instead of deterministic signatures as per [[RFC8032]].
+              </p>
             </li>
             <li>
               <p>