diff --git a/Dockerfile b/Dockerfile
index e7d97bcb0c276b880057cf2d906764a8feb5e7df..ae405d8e77ca052e609ae13276e1e624e88947da 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,13 +6,13 @@ FROM base AS iperf2
 ENV IPERF_VERSION="2.2.0-r0"
 RUN apk add --no-cache iperf=${IPERF_VERSION}
 ENTRYPOINT ["iperf", "-s"]
-EXPOSE 5001
+EXPOSE 5001/tcp 5001/udp
 
 # iPerf 3 image
 FROM base AS iperf3
 ENV IPERF_VERSION="3.17.1-r0"
 RUN apk add --no-cache iperf3=${IPERF_VERSION}
 ENTRYPOINT ["iperf3", "-s"]
-EXPOSE 5201
+EXPOSE 5201/tcp 5201/udp
 
 # vi: set ts=4 sw=4 et ft=dockerfile: