diff --git a/Dockerfile b/Dockerfile
index 6a3d6b0..db79b6a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-FROM alpine:3.12.3 AS build
+FROM alpine:3.13.1 AS build
 RUN apk add --no-cache tzdata
 
-FROM alpine:3.12.3
+FROM alpine:3.13.1
 MAINTAINER "f <f@sutty.nl>"
 
 # TODO: We don't want to receive lots of email, so we'll change this to
@@ -25,7 +25,7 @@ RUN chmod 600 /etc/monitrc
 EXPOSE 2812
 
 # Sutty's repository
-RUN echo 'https://alpine.sutty.nl/alpine/v3.12/sutty' >> /etc/apk/repositories
+RUN echo 'https://alpine.sutty.nl/alpine/v3.13/sutty' >> /etc/apk/repositories
 RUN wget https://alpine.sutty.nl/alpine/sutty.pub -O /etc/apk/keys/alpine@sutty.nl-5ea884cd.rsa.pub
 
 # Use tini as init