diff --git a/README.md b/README.md
index 26262734c0..34ce1afc44 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
     <a href="https://prometheus.io" target="_blank"><img alt="Prometheus" src="/documentation/images/prometheus-logo.svg"></a><br>Prometheus
 </h1>
 
+EXPERIMENT
 <p align="center">Visit <a href="https://prometheus.io" target="_blank">prometheus.io</a> for the full documentation,
 examples and guides.</p>