diff --git a/bin/clear-port b/bin/clear-port
index bc3f4d064e..993c1e2c91 100755
--- a/bin/clear-port
+++ b/bin/clear-port
@@ -1,14 +1,13 @@
 #!/bin/sh
 
-# Kills the process running on the provided port
+# Kills the processes listening on the provided port
 #
 # clear-port 3000
 
 if [ -n "$1" ]; then
-  port_num="$(lsof -ti4TCP:"$1")"
-  if [ $? -eq 0 ]; then
-    kill "$port_num"
-  fi
+  # A port can be held by more than one process, and a forked server's workers
+  # die with the parent, so signal every PID in a single kill.
+  lsof -ti4TCP:"$1" -sTCP:LISTEN | xargs -r kill
 else
   echo >&2 Usage: clear-port port-number
   exit 1