diff --git a/Monitoring.md b/Monitoring.md
index 2fa0655..f7eb251 100644
--- a/Monitoring.md
+++ b/Monitoring.md
@@ -9,6 +9,7 @@ services:
   netbox:
     environment:
       METRICS_ENABLED: 'true'
+      prometheus_multiproc_dir: /tmp/metrics
     volumes:
     - type: tmpfs
       target: /tmp/metrics