diff --git a/Dockerfile b/Dockerfile
index 73b7fec..546c8a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.15.4
+FROM alpine:3.18.3
 RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
 
 ADD lightscreen /lightscreen