diff --git a/src/epub/content.opf b/src/epub/content.opf
index d06802f..819d51e 100644
--- a/src/epub/content.opf
+++ b/src/epub/content.opf
@@ -24,7 +24,7 @@
tableOfContents
unlocked
none
- This publication conforms to WCAG 2.1 Level AA.
+ This publication conforms to WCAG 2.2 Level AA.
Melmoth the Wanderer
Melmoth the Wanderer