diff --git a/Dockerfile b/Dockerfile
index bc25ed1..1971589 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,7 +22,7 @@ RUN go install ./nats-box
 RUN go install ./nats-gob
 RUN strip /go/bin/*
 
-FROM alpine:3.11
+FROM alpine:3.15
 
 RUN apk add -U --no-cache ca-certificates figlet