diff --git a/requirements.in b/requirements.in
index c97be1d7a..98df64916 100644
--- a/requirements.in
+++ b/requirements.in
@@ -13,7 +13,7 @@ jinja2==3.0.2
 
 blinker==1.4
 pyexcel==0.6.7
-pyexcel-io==0.6.5
+pyexcel-io==0.6.6
 pyexcel-xls==0.7.0
 pyexcel-xlsx==0.6.0
 pyexcel-ods3==0.6.0
diff --git a/requirements.txt b/requirements.txt
index 9a4c1f23c..4179b5457 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -143,7 +143,7 @@ pyexcel==0.6.7
     # via -r requirements.in
 pyexcel-ezodf==0.3.4
     # via pyexcel-ods3
-pyexcel-io==0.6.5
+pyexcel-io==0.6.6
     # via
     #   -r requirements.in
     #   pyexcel