diff --git a/realtime/Dockerfile b/realtime/Dockerfile
index ed2909e..bdcc31d 100644
--- a/realtime/Dockerfile
+++ b/realtime/Dockerfile
@@ -7,6 +7,6 @@ RUN npm install
 
 COPY src ./src
 
-EXPOSE 3002
+EXPOSE 3000
 
 CMD ["node", "src/index.js"]
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