diff --git a/Dockerfile b/Dockerfile
index a5854af..3977cd2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,12 +4,12 @@ LABEL authors="Lachlan Kermode <lk@forensic-architecture.org>"
 
 # Install app dependencies
 COPY package.json /www/package.json
-RUN cd /www; yarn
+RUN cd /www; npm install
 
 # Copy app source
 COPY . /www
 WORKDIR /www
-RUN yarn build
+RUN npm run build
 RUN mkdir -p data
 
 # set your port
@@ -17,4 +17,4 @@ ENV PORT 4040
 EXPOSE 4040
 
 # start command as per package.json
-CMD ["yarn", "start"]
+CMD ["npm", "start"]