diff --git a/setup/linux-installer.py b/setup/linux-installer.py
index 13fcac6be3..3c7eced38d 100644
--- a/setup/linux-installer.py
+++ b/setup/linux-installer.py
@@ -515,6 +515,8 @@ if has_ssl_verify:
 
         def __init__(self, ssl_version, *args, **kwargs):
             kwargs['context'] = ssl.create_default_context(cafile=kwargs.pop('cert_file'))
+            if hasattr(ssl, 'VERIFY_X509_STRICT'):
+                kwargs['context'].verify_flags &= ~ssl.VERIFY_X509_STRICT
             httplib.HTTPSConnection.__init__(self, *args, **kwargs)
 else:
     class HTTPSConnection(httplib.HTTPSConnection):
diff --git a/setup/linux-installer.sh b/setup/linux-installer.sh
index dd5ad053af..e3882f8a3e 100644
--- a/setup/linux-installer.sh
+++ b/setup/linux-installer.sh
@@ -564,6 +564,8 @@ if has_ssl_verify:
 
         def __init__(self, ssl_version, *args, **kwargs):
             kwargs['context'] = ssl.create_default_context(cafile=kwargs.pop('cert_file'))
+            if hasattr(ssl, 'VERIFY_X509_STRICT'):
+                kwargs['context'].verify_flags &= ~ssl.VERIFY_X509_STRICT
             httplib.HTTPSConnection.__init__(self, *args, **kwargs)
 else:
     class HTTPSConnection(httplib.HTTPSConnection):