diff --git a/doc/source/dev/toolchain.rst b/doc/source/dev/toolchain.rst
index 51aab9b25682..7777157c7a7c 100644
--- a/doc/source/dev/toolchain.rst
+++ b/doc/source/dev/toolchain.rst
@@ -411,7 +411,7 @@ Building the Documentation
 
 ============================  =================================================
  Tool                         Version
-============================          =================================================
+============================  =================================================
 Sphinx                        Whatever recent versions work. >= 5.0.
 PyData Sphinx theme           Whatever recent versions work. >= 0.15.2.
 Sphinx-Design                 Whatever recent versions work. >= 0.4.0.