diff --git a/src/epub/content.opf b/src/epub/content.opf
index 5b76bed..4ad6d90 100644
--- a/src/epub/content.opf
+++ b/src/epub/content.opf
@@ -24,7 +24,7 @@
tableOfContents
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none
- This publication conforms to WCAG 2.1 Level AA.
+ This publication conforms to WCAG 2.2 Level AA.
The Second Mrs. Tanqueray
Second Mrs. Tanqueray, The