diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2bd01ae..e05fcce 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.21.0
+FROM alpine:3.21.2
 
 EXPOSE 5353 8080
 
diff --git a/docker/ci/Dockerfile b/docker/ci/Dockerfile
index d54c33d..b51d296 100644
--- a/docker/ci/Dockerfile
+++ b/docker/ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.21.0
+FROM alpine:3.21.2
 
 EXPOSE 5353 8080