diff --git a/requirements-app.txt b/requirements-app.txt
index 54c8911c5..c5238ee47 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -10,7 +10,7 @@ Flask-Login==0.5.0
 
 blinker==1.4
 pyexcel==0.6.5
-pyexcel-io==0.6.3
+pyexcel-io==0.6.4
 pyexcel-xls==0.6.1
 pyexcel-xlsx==0.6.0
 pyexcel-ods3==0.6.0