diff --git a/src/epub/content.opf b/src/epub/content.opf
index b1b2b67..7eec66d 100644
--- a/src/epub/content.opf
+++ b/src/epub/content.opf
@@ -15,8 +15,8 @@
 		<meta property="file-as" refines="#type-designer">League of Moveable Type, The</meta>
 		<meta property="se:url.homepage" refines="#type-designer">https://www.theleagueofmoveabletype.com</meta>
 		<meta property="role" refines="#type-designer" scheme="marc:relators">tyd</meta>
-		<link href="http://www.idpf.org/epub/a11y/accessibility-20170105.html#wcag-aa" rel="dcterms:conformsTo"/>
-		<meta property="a11y:certifiedBy">Standard Ebooks</meta>
+		<meta id="conformance-statement" property="dcterms:conformsTo">EPUB Accessibility 1.1 - WCAG 2.2 Level AA</meta>
+		<meta property="a11y:certifiedBy" refines="#conformance-statement">Standard Ebooks</meta>
 		<meta property="schema:accessMode">textual</meta>
 		<meta property="schema:accessModeSufficient">textual</meta>
 		<meta property="schema:accessibilityFeature">readingOrder</meta>