diff --git a/postorius/Dockerfile b/postorius/Dockerfile
index 41a97ec5..c91ebb4a 100644
--- a/postorius/Dockerfile
+++ b/postorius/Dockerfile
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 # Add needed files for uwsgi server + settings for django
 COPY mailman-web /opt/mailman-web
diff --git a/postorius/Dockerfile.dev b/postorius/Dockerfile.dev
index 5a985df5..6a44312f 100644
--- a/postorius/Dockerfile.dev
+++ b/postorius/Dockerfile.dev
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 # Add needed files for uwsgi server + settings for django
 COPY mailman-web /opt/mailman-web