diff --git a/Dockerfile b/Dockerfile
index 1db97e0284b2f425c8d09b76179a4a5394c9136b..6bf13dc31690a1d0a0b576fe900d644996ac2f51 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,5 +10,6 @@ RUN \
 
 EXPOSE 8545
 EXPOSE 30303
+EXPOSE 30303/udp
 
 ENTRYPOINT ["geth"]