diff --git a/docker-compose.yml b/docker-compose.yml
index 708b473..aedece1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -140,7 +140,7 @@ services:
     restart: always
 
   prometheus:
-    image: prom/prometheus:v3.2.0@sha256:5888c188cf09e3f7eebc97369c3b2ce713e844cdbd88ccf36f5047c958aea120
+    image: prom/prometheus:v3.9.1@sha256:1f0f50f06acaceb0f5670d2c8a658a599affe7b0d8e78b898c1035653849a702
     command:
       - "--web.external-url=https://${PROMETHEUS_DOMAIN:-prometheus.owncloud.test}"
       - "--config.file=/etc/prometheus/prometheus.yml"