diff --git a/dev/portal_prometheus/Dockerfile b/dev/portal_prometheus/Dockerfile
index 95e11c9..71c3bcc 100644
--- a/dev/portal_prometheus/Dockerfile
+++ b/dev/portal_prometheus/Dockerfile
@@ -1,2 +1,2 @@
-FROM prom/prometheus:v2.48.0
+FROM prom/prometheus:v2.55.1
 ADD prometheus.yml /etc/prometheus
diff --git a/dev/site_prometheus/Dockerfile b/dev/site_prometheus/Dockerfile
index 95e11c9..71c3bcc 100644
--- a/dev/site_prometheus/Dockerfile
+++ b/dev/site_prometheus/Dockerfile
@@ -1,2 +1,2 @@
-FROM prom/prometheus:v2.48.0
+FROM prom/prometheus:v2.55.1
 ADD prometheus.yml /etc/prometheus
diff --git a/docker-compose.portal.yml b/docker-compose.portal.yml
index 44bca4d..9b0fe73 100644
--- a/docker-compose.portal.yml
+++ b/docker-compose.portal.yml
@@ -11,7 +11,7 @@ x-logging:
 services:
   # global prometheus instance scraping data from the local instances
   portal_prometheus:
-    image: "prom/prometheus:v2.48.0"
+    image: "prom/prometheus:v2.55.1"
     container_name: portal_prometheus
     networks:
       portal:
diff --git a/docker-compose.site.yml b/docker-compose.site.yml
index e596235..90d5338 100644
--- a/docker-compose.site.yml
+++ b/docker-compose.site.yml
@@ -35,7 +35,7 @@ services:
       - "${EXPORTER_PORT}:8080"
   # prometheus instance responsible for monitoring
   site_prometheus:
-    image: "prom/prometheus:v2.48.0"
+    image: "prom/prometheus:v2.55.1"
     # use self build Dockerfile as alternative
     # build: prod/site_prometheus
     container_name: project_usage_prometheus
diff --git a/prod/portal_prometheus/Dockerfile b/prod/portal_prometheus/Dockerfile
index 95e11c9..71c3bcc 100644
--- a/prod/portal_prometheus/Dockerfile
+++ b/prod/portal_prometheus/Dockerfile
@@ -1,2 +1,2 @@
-FROM prom/prometheus:v2.48.0
+FROM prom/prometheus:v2.55.1
 ADD prometheus.yml /etc/prometheus
diff --git a/prod/site_prometheus/Dockerfile b/prod/site_prometheus/Dockerfile
index 7d478d1..7db2e0e 100644
--- a/prod/site_prometheus/Dockerfile
+++ b/prod/site_prometheus/Dockerfile
@@ -1,4 +1,4 @@
-FROM prom/prometheus:v2.48.0
+FROM prom/prometheus:v2.55.1
 # relative to compose file
 ADD prometheus.yml /etc/prometheus/prometheus.yml