diff --git a/Dockerfile b/Dockerfile
index 514e698..25b80d0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,7 @@
 FROM alpine
 
-RUN apk --no-cache add socat
+RUN apk --no-cache add socat libcap \
+ && setcap 'cap_net_bind_service=+ep' /usr/bin/socat \
+ && apk del libcap
 
 ENTRYPOINT ["socat"]