diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -18,6 +18,7 @@ setup(
     test_suite='nose.collector',
     tests_require=['nose >= 1.3'],
     install_requires=[
+        'openpyxl >= 1.6.2',
         'pyfastaq >= 3.12.0',
         'pysam >= 0.8.1, <= 0.8.3',
         'pymummer>=0.6.1',
Reinstate dependency on openpyxl