diff --git a/browsermobproxy/client.py b/browsermobproxy/client.py
index 8a3dd3b..19dd309 100644
--- a/browsermobproxy/client.py
+++ b/browsermobproxy/client.py
@@ -28,7 +28,7 @@ def __init__(self, url, params=None, options=None):
         if 'existing_proxy_port_to_use' in options:
             self.port = options['existing_proxy_port_to_use']
         else:
-            resp = requests.post('%s/proxy' % self.host + urlparams)
+            resp = requests.post('%s/proxy' % self.host + urlparams, {"trustAllServers": True})
             content = resp.content.decode('utf-8')
             try:
                 jcontent = json.loads(content)