diff --git a/setup.py b/setup.py
index 19ccf738..8176e945 100755
--- a/setup.py
+++ b/setup.py
@@ -12,11 +12,11 @@
     description='Python XML Signature library',
     long_description=open('README.rst').read(),
     install_requires=[
-        'lxml >= 3.5.0, < 3.7',
+        'lxml >= 3.5.0, < 3.8',
         'defusedxml >= 0.4.1, < 0.6',
         'eight >= 0.3.0, < 0.5',
         'cryptography >= 1.2.3, < 1.8',
-        'pyOpenSSL >= 0.15.1, < 17',
+        'pyOpenSSL >= 0.15.1, < 18',
         'certifi >= 2015.11.20.1'
     ],
     extras_require={