diff --git a/Dockerfile b/Dockerfile
index 7b0c3ee..01298dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,7 @@ COPY package.json ./
 RUN npm install
 COPY db db
 COPY src src
+COPY util util
 COPY config.yml ./
 COPY server.js ./
 CMD ["node", "server.js"]
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