diff --git a/setup.cfg b/setup.cfg
index 475d938..939dc03 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,6 +27,7 @@ python_requires = >=3.6
 install_requires =
 	importlib_metadata
 	plover>=4.0.0.dev9
+ 	openpyxl==3.0.10
 	pyexcel>=0.4.5
 	pyexcel-ods>=0.6.0
 	pyexcel-xlsx>=0.3.0