diff --git a/simptext/requirements.txt b/simptext/requirements.txt
index 8da5ca6..dac4801 100644
--- a/simptext/requirements.txt
+++ b/simptext/requirements.txt
@@ -21,7 +21,7 @@ lxml==3.6.0
 MarkupSafe==0.23
 nltk==3.2.1
 numpy==1.11.1
-openpyxl==2.3.5
+openpyxl==2.4.2
 Pattern==2.6
 pep8==1.7.0
 pyparsing==2.1.5