diff --git a/docker/Dockerfile b/docker/Dockerfile
index 498a8d1..dc6d420 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,9 @@
 FROM alpine:3.6
 
+RUN apk --update add ca-certificates \
+ && update-ca-certificates \
+ && rm -rf /var/cache/apk/*
+
 COPY docker/docker-entrypoint.sh /usr/local/bin/
 COPY docker/config.dist.yml /usr/local/etc/minecraft-skinsystem/