diff --git a/Dockerfile b/Dockerfile
index c4510d9..d18ff41 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:carbon-alpine
+FROM node:carbon-alpine@sha256:ef7249dd4f837b47e97a535097e83c754c3836430bc756a26bdecbc6ff2ad179
 LABEL maintainer "Tim Brust <tim.brust@sinnerschrader.com>"
 
 ENV REFRESHED_AT 2018-01-08