diff --git a/Dockerfile b/Dockerfile
index d7a5a46..5eff46a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,9 +15,10 @@ WORKDIR /usr/src/certificate-worker
 
 COPY package.json ./
 COPY yarn.lock ./
-COPY src ./src
 
 RUN yarn install --pure-lockfile
 
+COPY src ./src
+
 CMD ["yarn",  "start"]