diff --git a/warcprox/warcproxy.py b/warcprox/warcproxy.py
index 2f63a77..b6a0943 100644
--- a/warcprox/warcproxy.py
+++ b/warcprox/warcproxy.py
@@ -483,6 +483,7 @@ class WarcProxy(SingleThreadedWarcProxy, warcprox.mitmproxy.PooledMitmProxy):
     def server_close(self):
         self.logger.info('shutting down')
         http_server.HTTPServer.server_close(self)
+        self.remote_connection_pool.clear()
 
     def handle_error(self, request, client_address):
         self.logger.warn(