diff --git a/requirements.txt b/requirements.txt
index c3b85f2..ae47ad9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -85,7 +85,7 @@ numpydoc==0.6.0
 odo==0.5.0
 olefile==0.44
 opencv-python
-openpyxl==2.4.1
+openpyxl==2.4.2
 pandas==0.19.2
 packaging==16.8
 partd==0.3.7