diff --git a/postorius/Dockerfile b/postorius/Dockerfile
index c157df9..93eaca8 100644
--- a/postorius/Dockerfile
+++ b/postorius/Dockerfile
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.19.1
+FROM alpine:3.20.0
 
 # Install packages and dependencies for postorius and hyperkitty Add user for
 # executing apps, change ownership for uwsgi+django files and set execution
diff --git a/postorius/Dockerfile.dev b/postorius/Dockerfile.dev
index fe02d3f..b80a66c 100644
--- a/postorius/Dockerfile.dev
+++ b/postorius/Dockerfile.dev
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.19.1
+FROM alpine:3.20.0
 
 ARG POSTORIUS_REF
 ARG DJ_MM3_REF
diff --git a/web/Dockerfile b/web/Dockerfile
index 1c502e0..2c2f464 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.19.1
+FROM alpine:3.20.0
 
 # Add requirements file.
 COPY requirements.txt /tmp/
diff --git a/web/Dockerfile.dev b/web/Dockerfile.dev
index f3ecd5e..7c93f3c 100644
--- a/web/Dockerfile.dev
+++ b/web/Dockerfile.dev
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.19.1
+FROM alpine:3.20.0
 
 ARG POSTORIUS_REF
 ARG HYPERKITTY_REF