diff --git a/day-2018-05-10/myproject/requirements.txt b/day-2018-05-10/myproject/requirements.txt
index 4809c5e6..6db7b34d 100644
--- a/day-2018-05-10/myproject/requirements.txt
+++ b/day-2018-05-10/myproject/requirements.txt
@@ -34,7 +34,7 @@ mysqlclient==1.3.7
 nose==1.3.7
 numexpr==2.4.3
 numpy==1.11.0
-openpyxl==2.3.0
+openpyxl==2.4.2
 pandas==0.17.1
 patsy==0.4.1
 pexpect==4.0.1