diff --git a/src/epub/content.opf b/src/epub/content.opf
index 25c7d3e..9d62a51 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.
The Teeth of the Tiger
Teeth of the Tiger, The