diff --git a/test/timeout.sh b/test/timeout.sh
index 615c28c..3e841c9 100755
--- a/test/timeout.sh
+++ b/test/timeout.sh
@@ -12,7 +12,7 @@
 fi
 
 log '    Testing non-responding registry'
-cat | nc --listen $PORT >/dev/null &
+cat | nc -l $PORT >/dev/null &
 PID=$!
 if timeout 10s $DUB fetch dub --skip-registry=all --registry=http://localhost:$PORT; then
     die 'Fetching from non-responding registry should fail.'
@@ -33,7 +33,7 @@
         echo -n "${res:$i:1}"
         sleep 1
     done
-} | nc --listen $PORT >/dev/null &
+} | nc -l $PORT >/dev/null &
 PID=$!
 if timeout 10s time $DUB fetch dub --skip-registry=all --registry=http://localhost:$PORT; then
     die 'Fetching from too slow registry should fail.'