diff --git a/docs/tutorial/our-application/index.md b/docs/tutorial/our-application/index.md
index fceca1f..a6a3fe4 100644
--- a/docs/tutorial/our-application/index.md
+++ b/docs/tutorial/our-application/index.md
@@ -38,6 +38,7 @@ see a few flaws in the Dockerfile below. But, don't worry! We'll go over them.
 
     ```dockerfile
     FROM node:12-alpine
+    RUN apk add --no-cache python g++ make
     WORKDIR /app
     COPY . .
     RUN yarn install --production