diff --git a/src/epub/content.opf b/src/epub/content.opf
index 622a7bd..f706d97 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 Amateur Cracksman
Amateur Cracksman, The