diff --git a/Dockerfile b/Dockerfile
index 8d95844..c24045a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.18
 RUN apk add --no-cache lua5.3 lua-filesystem lua-lyaml lua-http
 COPY fetch-latest-releases.lua /usr/local/bin
 VOLUME /out