diff --git a/doc/source/install.rst b/doc/source/install.rst
index 4640da8b8239a..7a846c817aee2 100644
--- a/doc/source/install.rst
+++ b/doc/source/install.rst
@@ -270,7 +270,7 @@ Optional Dependencies
* For Excel I/O:
* `xlrd/xlwt `__: Excel reading (xlrd) and writing (xlwt)
- * `openpyxl `__: openpyxl version 2.4.0
+ * `openpyxl `__: openpyxl version 2.4.0
for writing .xlsx files (xlrd >= 0.9.0)
* `XlsxWriter `__: Alternative Excel writer