diff --git a/requirements-app.txt b/requirements-app.txt
index 69be07785..c29bba6cc 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -8,7 +8,7 @@ Flask-Login==0.4.1
 
 blinker==1.4
 pyexcel==0.5.8
-pyexcel-io==0.5.8
+pyexcel-io==0.5.9
 pyexcel-xls==0.5.7
 pyexcel-xlsx==0.5.6
 pyexcel-ods3==0.5.2