From 5c916bebe84aa08f3ca5bcedb685451fd737d6f4 Mon Sep 17 00:00:00 2001
From: Renne Rocha <renne@rennerocha.com>
Date: Mon, 29 Jul 2019 19:07:34 -0300
Subject: [PATCH] Added constrain on lxml version based on Python version

---
 requirements-py3.txt  | 3 ++-
 setup.py              | 3 ++-
 tests/constraints.txt | 3 +--
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/requirements-py3.txt b/requirements-py3.txt
index 5a5d4c95af4..478ed0010dd 100644
--- a/requirements-py3.txt
+++ b/requirements-py3.txt
@@ -1,5 +1,6 @@
 Twisted>=17.9.0
-lxml>=3.2.4
+lxml;python_version!="3.4"
+lxml<=4.3.5;python_version=="3.4"
 pyOpenSSL>=0.13.1
 cssselect>=0.9
 queuelib>=1.1.1
diff --git a/setup.py b/setup.py
index 4dc6d18c165..ee0aaabf0aa 100644
--- a/setup.py
+++ b/setup.py
@@ -69,7 +69,8 @@ def has_environment_marker_platform_impl_support():
         'Twisted>=13.1.0,<=19.2.0;python_version=="3.4"',
         'w3lib>=1.17.0',
         'queuelib',
-        'lxml',
+        'lxml;python_version!="3.4"',
+        'lxml<=4.3.5;python_version=="3.4"',
         'pyOpenSSL',
         'cssselect>=0.9',
         'six>=1.5.2',
diff --git a/tests/constraints.txt b/tests/constraints.txt
index e59e68b3f20..5655ac2d374 100644
--- a/tests/constraints.txt
+++ b/tests/constraints.txt
@@ -1,2 +1 @@
-Twisted!=18.4.0
-lxml!=4.2.2
\ No newline at end of file
+Twisted!=18.4.0
\ No newline at end of file