diff --git a/requirements.txt b/requirements.txt
index 4abdbcb..b005e50 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -76,7 +76,7 @@ numba==0.21.0
 numexpr==2.4.4
 numpy==1.10.1
 odo==0.3.4
-openpyxl==2.2.6
+openpyxl==2.4.2
 pandas==0.17.0
 path.py==0.0.0
 patsy==0.4.0