diff --git a/docker/Dockerfile b/docker/Dockerfile
index 784f6bf..a2f5f6e 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.16.2
+FROM alpine:3.16.3
 
 EXPOSE 5353 8080
 
diff --git a/docker/ci/Dockerfile b/docker/ci/Dockerfile
index d1b144e..061d7ea 100644
--- a/docker/ci/Dockerfile
+++ b/docker/ci/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.16.2
+FROM alpine:3.16.3
 
 EXPOSE 5353 8080