diff --git a/Dockerfile b/Dockerfile
index ecfc3c4..6ad4ba2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.12
+FROM alpine:3.13.1
 MAINTAINER "f <f@sutty.nl>"
 
 RUN apk add --no-cache alpine-sdk ccache cmake