diff --git a/Monitor-Stack/docker-compose-volume.yaml b/Monitor-Stack/docker-compose-volume.yaml
index d18618f..22cca4e 100644
--- a/Monitor-Stack/docker-compose-volume.yaml
+++ b/Monitor-Stack/docker-compose-volume.yaml
@@ -23,7 +23,7 @@ services:
     restart: unless-stopped
 
   prometheus:
-    image: prom/prometheus:${PROMETHEUS_VERSION:-3.12.0}
+    image: prom/prometheus:${PROMETHEUS_VERSION:-v3.12.0}
     container_name: prometheus
     ports:
       - "${PROMETHEUS_PORT:-9090}:9090"