diff --git a/Dockerfile.template b/Dockerfile.template
index d2198cb..aa9fb8c 100644
--- a/Dockerfile.template
+++ b/Dockerfile.template
@@ -1,5 +1,5 @@
 FROM resin/%%RESIN_MACHINE_NAME%%-alpine:latest
-RUN apk update && apk add bash py-pip && \
+RUN apk update && apk add bash py-pip lockfile-progs && \
   rm -rf /var/cache/apk/* && \
   pip install --upgrade pip && \
   pip install flask