diff --git a/requirements.txt b/requirements.txt
index af48d6b..be5961d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -167,7 +167,7 @@ numpy==1.8.1
 oauth==1.0.1
 oauth2==1.5.211
 openopt==0.5402
-openpyxl==1.6.2
+openpyxl==2.4.2
 Orange==2.7.8
 Orange-Text==1.2a1
 ordereddict==1.1