diff --git a/Dockerfile b/Dockerfile
index 5814f880..9cde9c99 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,6 +10,7 @@ WORKDIR ${DIRECTORY}
 
 # Copy over both 'package.json' and 'package-lock.json' (if available)
 COPY package*.json ./
+COPY yarn.lock ./
 
 # Install project dependencies
 RUN yarn