Fixes version note
diff --git a/source/security/index.md b/source/security/index.md
index 195f65d..af323a1 100644
--- a/source/security/index.md
+++ b/source/security/index.md
@@ -284,6 +284,8 @@
### Resource Isolation Using Fetch Metadata
+> Note: since Struts 6.0.0
+
Fetch Metadata is a mitigation against common cross origin attacks such as Cross-Site Request Forgery (CSRF). It is
a web platform security feature designed to help servers defend themselves against cross-origin attacks based
on the preferred resource isolation policy. The browser provides information about the context of an HTTP request
@@ -300,7 +302,7 @@
### Cross Origin Isolation with COOP and COEP
-> Note: since Struts 2.6.
+> Note: since Struts 6.0.0
[Cross-Origin Opener Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Opener-Policy) is
a security mitigation that lets developers isolate their resources against side-channel attacks and information leaks.
