diff --git a/Dockerfile b/Dockerfile
index 8f698da..85177d3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:8-slim
+FROM node@sha256:6f47d69e8deac79b425d3f5d49ee0f804dbfb07bfc0f8ee8688c1bff0fb50448
 
 WORKDIR /starter
 ENV NODE_ENV development