diff --git a/README.md b/README.md
index 012ae0a..fe29a66 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,8 @@ Today thoose metrics was fetched by this exporter:
 * cpu 
   * load
   * irq
+* system
+  * uptime
 
 # Misc