diff --git a/doc-source/requirements.txt b/doc-source/requirements.txt
index dcfde64a..177794b0 100644
--- a/doc-source/requirements.txt
+++ b/doc-source/requirements.txt
@@ -4,7 +4,7 @@ dummy-wx>=0.3.0
 extras-require>=0.5.0
 html-section>=0.3.0
 seed-intersphinx-mapping>=1.2.2
-sphinx<3.4.0,>=3.0.3
+sphinx>=3.0.3,<7.2.0
 sphinx-copybutton>=0.2.12
 sphinx-debuginfo>=0.2.2
 sphinx-licenseinfo>=0.3.1