diff --git a/docker/Dockerfile b/docker/Dockerfile
index 6096225..a69b701 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 EXPOSE 5353 8080
 
diff --git a/docker/ci/Dockerfile b/docker/ci/Dockerfile
index 2d74848..e553fdc 100644
--- a/docker/ci/Dockerfile
+++ b/docker/ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 
 EXPOSE 5353 8080