diff --git a/src/dockerproxy.js b/src/dockerproxy.js
index f466f72c4..0b72abde8 100644
--- a/src/dockerproxy.js
+++ b/src/dockerproxy.js
@@ -184,6 +184,7 @@ async function start() {
 async function stop() {
     if (!gHttpServer) return;
 
+    gHttpServer.closeAllConnections();
     await util.promisify(gHttpServer.close.bind(gHttpServer))();
     gHttpServer = null;
 }