diff --git a/README.md b/README.md
index c404fd9a99676a2e3862a9e3d987937a0a6fa764..b8f2fbbb678a74baacf870f4f16355e27f5c5cc1 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,8 @@ in Python 2.7 by default. You can also write code that is compatible with both
 
 * xlrd and xlwt from [python-excel](http://www.python-excel.org/)
 
+* [openpyxl](http://openpyxl.readthedocs.org/en/default/)
+
 * h5py
 
 * [matplotlib](http://matplotlib.org/)
diff --git a/requirements.txt b/requirements.txt
index 7db2fa20e5157ff89396e03ed16541fcbd73a453..1c12bab28021d3dd10594cea6cb59de041bd0684 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,6 +6,7 @@ matplotlib
 pytest
 xlrd
 xlwt
+openpyxl
 h5py
 pandas
 tables