diff --git a/demo/Dockerfile b/demo/Dockerfile
index 1db805b59..ce9031338 100644
--- a/demo/Dockerfile
+++ b/demo/Dockerfile
@@ -9,7 +9,7 @@ ARG VERSION
 RUN apk add --update make git
 RUN CGO_ENABLED=0 make -C /src VERSION="${VERSION:-dev}" karma
 
-FROM alpine:3.9
+FROM alpine:3.10
 RUN apk add --update supervisor python && rm  -rf /tmp/* /var/cache/apk/*
 COPY demo/supervisord.conf /etc/supervisord.conf
 COPY --from=prom/alertmanager:v0.17.0 /bin/alertmanager /alertmanager