diff --git a/setup.py b/setup.py
index 0ae7f00..1dc825e 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 # coding=utf-8
 from setuptools import setup, find_packages
 
-VERSION = "0.1.33"
+VERSION = "0.1.34"
 
 setup(
     name="PyTrustNFe",
@@ -35,7 +35,7 @@ later (LGPLv2+)',
     long_description=open('README.md', 'r').read(),
     install_requires=[
         'Jinja2 >= 2.8',
-        'signxml >= 2.0.0',
+        'signxml == 2.2.6',
         'lxml >= 3.6.0, < 3.7',
         'suds >= 0.4',
         'suds_requests >= 0.3',