diff --git a/Dockerfile b/Dockerfile
index 67bce18..89ba3c0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.12
+FROM alpine:3.13
 MAINTAINER Micha Gläß-Stöcker <micha+docker@glaess.cc>
 
 # Build-time metadata as defined at http://label-schema.org