diff --git a/docs/partials/envvars.md b/docs/partials/envvars.md
index 86bcbf5..ea0562c 100644
--- a/docs/partials/envvars.md
+++ b/docs/partials/envvars.md
@@ -34,6 +34,9 @@ HCLOUD_EXPORTER_COLLECTOR_PRICING
 HCLOUD_EXPORTER_COLLECTOR_SERVERS
 : Enable collector for servers, defaults to `true`
 
+HCLOUD_EXPORTER_COLLECTOR_SERVER_METRICS
+: Enable collector for server metrics, defaults to `true`
+
 HCLOUD_EXPORTER_COLLECTOR_LOAD_BALANCERS
 : Enable collector for load balancers, defaults to `true`