diff --git a/requirements.txt b/requirements.txt
index 9a94f0c..428cdb7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,3 +14,4 @@ cryptography >= 1.8, < 1.10
 pyOpenSSL >= 16.0.0, < 17
 certifi >= 2015.11.20.1
 reportlab
+pytz
diff --git a/setup.py b/setup.py
index 514789b..0a0b402 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 # coding=utf-8
 from setuptools import setup, find_packages
 
-VERSION = "0.1.46"
+VERSION = "0.1.47"
 
 setup(
     name="PyTrustNFe",
@@ -40,7 +40,8 @@ later (LGPLv2+)',
         'lxml >= 3.5.0, < 4',
         'suds >= 0.4',
         'suds_requests >= 0.3',
-        'reportlab'
+        'reportlab',
+	'pytz'
     ],
     test_suite='nose.collector',
     tests_require=[