diff --git a/mercurial/httpclient/__init__.py b/mercurial/httpclient/__init__.py
--- a/mercurial/httpclient/__init__.py
+++ b/mercurial/httpclient/__init__.py
@@ -517,7 +517,7 @@
             logger.info('Connecting to http proxy %s:%s',
                         self._proxy_host, self._proxy_port)
             sock = socket.create_connection((self._proxy_host,
-                                             self._proxy_port))
+                                             self._proxy_port), self.timeout)
             if self.ssl:
                 data = self._buildheaders(b'CONNECT', b'%s:%d' % (self.host,
                                                                   self.port),
@@ -549,7 +549,8 @@
                 logger.info('CONNECT (for SSL) to %s:%s via proxy succeeded.',
                             self.host, self.port)
         else:
-            sock = socket.create_connection((self.host, self.port))
+            sock = socket.create_connection((self.host, self.port),
+                                            self.timeout)
         if self.ssl:
             # This is the default, but in the case of proxied SSL
             # requests the proxy logic above will have cleared