diff --git a/Dockerfile b/Dockerfile
index 32428da..0d22dd6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,10 @@
 FROM node:15.1.0 as builder
 WORKDIR /project
-COPY package.json /project/package.json
+COPY package-lock.json /project/package-lock.json
 RUN npm ci
 
 # use separate layer for more efficient caching
+COPY package.json /project/package.json
 COPY snowpack.config.js /project/snowpack.config.js
 COPY src /project/src