diff --git a/core/Dockerfile b/core/Dockerfile
index f641f20..c917d15 100644
--- a/core/Dockerfile
+++ b/core/Dockerfile
@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.3
 # Use 3.15 for Core since it has Python 3.9
-FROM alpine:3.17
+FROM alpine:3.18
 
 #Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
diff --git a/core/Dockerfile.dev b/core/Dockerfile.dev
index 6bbac97..4dfdaaf 100644
--- a/core/Dockerfile.dev
+++ b/core/Dockerfile.dev
@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.3
 # Use 3.15 for Core since it has Python 3.9
-FROM alpine:3.17
+FROM alpine:3.18
 
 #Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/
diff --git a/postorius/Dockerfile b/postorius/Dockerfile
index f698050..d44a78c 100644
--- a/postorius/Dockerfile
+++ b/postorius/Dockerfile
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.17.3
+FROM alpine:3.18.0
 
 # 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 d79f477..815e706 100644
--- a/postorius/Dockerfile.dev
+++ b/postorius/Dockerfile.dev
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.17.3
+FROM alpine:3.18.0
 
 # Add needed files for uwsgi server + settings for django
 COPY mailman-web /opt/mailman-web