diff --git a/zip-0317.html b/zip-0317.html
index 457055fc..16af4c83 100644
--- a/zip-0317.html
+++ b/zip-0317.html
@@ -23,7 +23,7 @@ License: MIT
 Discussions-To: &lt;<a href="https://forum.zcashcommunity.com/t/zip-proportional-output-fee-mechanism-pofm/42808">https://forum.zcashcommunity.com/t/zip-proportional-output-fee-mechanism-pofm/42808</a>&gt;
 Pull-Request: &lt;<a href="https://github.com/zcash/zips/pull/631">https://github.com/zcash/zips/pull/631</a>&gt;</pre>
         <section id="terminology"><h2><span class="section-heading">Terminology</span><span class="section-anchor"> <a rel="bookmark" href="#terminology"><img width="24" height="24" class="section-anchor" src="assets/images/section-anchor.png" alt=""></a></span></h2>
-            <p>The key words "SHOULD", "SHOULD NOT", and "RECOMMENDED" in this document are to be interpreted as described in RFC 2119. <a id="footnote-reference-1" class="footnote_reference" href="#rfc2119">1</a></p>
+            <p>The key words "SHOULD", "SHOULD NOT", "RECOMMENDED", and "MAY" in this document are to be interpreted as described in RFC 2119. <a id="footnote-reference-1" class="footnote_reference" href="#rfc2119">1</a></p>
             <p>The term "conventional transaction fee" in this document is in reference to the value of a transaction fee that is conventionally used by wallets, and that a user can reasonably expect miners on the Zcash network to accept for including a transaction in a block.</p>
             <p>The terms "Mainnet, "Testnet", and "zatoshi" in this document are defined as in <a id="footnote-reference-2" class="footnote_reference" href="#protocol-networks">2</a>.</p>
         </section>
diff --git a/zip-0317.rst b/zip-0317.rst
index fddd6d83..dc16056d 100644
--- a/zip-0317.rst
+++ b/zip-0317.rst
@@ -20,7 +20,7 @@
 Terminology
 ===========
 
-The key words "SHOULD", "SHOULD NOT", and "RECOMMENDED" in this document
+The key words "SHOULD", "SHOULD NOT", "RECOMMENDED", and "MAY" in this document
 are to be interpreted as described in RFC 2119. [#RFC2119]_
 
 The term "conventional transaction fee" in this document is in reference