diff --git a/Dockerfile b/Dockerfile
index 7325b5b..338a2ae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:dubnium-alpine
+FROM node:dubnium-alpine@sha256:b3e157beaf4f780f6e6ed058a438989afb0e5174b812c089e731b9f75b4db416
 LABEL maintainer "Tim Brust <tim.brust@sinnerschrader.com>"
 
 ARG REFRESHED_AT