diff --git a/web/Dockerfile b/web/Dockerfile
index ffa459b..eca1146 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.21.3
+FROM alpine:3.22.2
 
 # Add requirements file.
 COPY requirements.txt /tmp/
diff --git a/web/Dockerfile.dev b/web/Dockerfile.dev
index d3fa459..e6e90f3 100644
--- a/web/Dockerfile.dev
+++ b/web/Dockerfile.dev
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1.3
-FROM alpine:3.21.3
+FROM alpine:3.22.2
 
 ARG POSTORIUS_REF
 ARG HYPERKITTY_REF