diff --git a/API-Keys.md b/API-Keys.md
index 654fe84..879371b 100644
--- a/API-Keys.md
+++ b/API-Keys.md
@@ -1,4 +1,5 @@
 # API Keys
+(Version >= 1.21.0)
 
 API keys can be used to access secured HTTP APIs, including the
 Prometheus metrics endpoint.
diff --git a/_Sidebar.md b/_Sidebar.md
index 6754173..0c21e97 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -14,6 +14,7 @@
 - [How to Monitor Docker Containers](https://github.com/louislam/uptime-kuma/wiki/How-to-Monitor-Docker-Containers)
 - [Maintenance](https://github.com/louislam/uptime-kuma/wiki/Maintenance)
 - [3rd Party Addons](https://github.com/louislam/uptime-kuma/wiki/3rd-Party-Addons)
+- [API Keys](https://github.com/louislam/uptime-kuma/wiki/API-Keys)
 
 ## Network
 - [Reverse Proxy](https://github.com/louislam/uptime-kuma/wiki/Reverse-Proxy)