diff --git a/docs/docs/security.md b/docs/docs/security.md
index de1acb5e..01918059 100644
--- a/docs/docs/security.md
+++ b/docs/docs/security.md
@@ -37,7 +37,7 @@ validator below:
 
 :::note
 
-Note that the implementation below depends on 2 JWT libraries:
+Note that the implementation[^1] below depends on 2 JWT libraries:
 
 ```xml
 <dependency>
@@ -214,6 +214,8 @@ public class ES384JwtTokenValidator implements AccessTokenValidator {
 }
 ```
 
+[^1]: https://stackoverflow.com/a/58965516
+
 [BinderFactory]: https://github.com/QubitPi/jersey-ws-template/blob/master/src/main/java/com/qubitpi/ws/jersey/template/application/BinderFactory.java
 
 [OAuth 2 access token]: https://www.oauth.com/oauth2-servers/access-tokens/