diff --git a/prometheus/Dockerfile b/prometheus/Dockerfile
index 3b1d2eb..64704a5 100644
--- a/prometheus/Dockerfile
+++ b/prometheus/Dockerfile
@@ -1,4 +1,4 @@
-FROM prom/prometheus
+FROM prom/prometheus:v2.55.1
 
 # copy the Prometheus configuration file
 COPY prometheus.yml /etc/prometheus/prometheus.yml
@@ -16,4 +16,4 @@ CMD        [ "--config.file=/etc/prometheus/prometheus.yml", \
              "--web.console.templates=/usr/share/prometheus/consoles", \
              "--web.external-url=http://prometheus.abstract.money", \
              "--log.level=info"]
- 
\ No newline at end of file
+