diff --git a/Dockerfile b/Dockerfile
index 0da0aec..1dc6375 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,8 +2,10 @@ FROM scratch
 LABEL maintainer="himself@stevenpolley.net"
 COPY data data
 COPY ca-certificates.crt /etc/ssl/certs/
+COPY zoneinfo.zip zoneinfo.zip
 COPY ynab-portfolio-monitor .
 
 EXPOSE 8080
 
+ENV ZONEINFO zoneinfo.zip
 CMD [ "./ynab-portfolio-monitor" ]