diff --git a/setup.py b/setup.py
index 6dcc4f80..a9aa1936 100755
--- a/setup.py
+++ b/setup.py
@@ -121,7 +121,7 @@ def run_tests(self):
         'matplotlib>=1.4.3',
         'lxml>=3.6.4',
         'scipy>=0.17',
-        'openpyxl==2.5.0',
+        'openpyxl>=2.6.0',
         'requests>=2.21.0'
     ],
     tests_require=['pytest'],