diff --git a/Dockerfile b/Dockerfile
index 9f8d942..125757b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,4 +5,5 @@ ADD ./release/*/*/ubnt-freifunk-map-api /opt/ubnt-freifunk-map-api
 ADD ./devices.json /opt/devices.json
 RUN chmod +x /opt/ubnt-freifunk-map-api
 
+EXPOSE 3000
 ENTRYPOINT [ "/opt/ubnt-freifunk-map-api" ]
\ No newline at end of file