diff --git a/requirements-dev.txt b/requirements-dev.txt
index 14457359..19ab41db 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -8,7 +8,7 @@ pre-commit
 pytest
 pytest-dependency
 pytest-mock
-sphinx<=3.5.4
+sphinx
 sphinx_rtd_theme
 sphinx_autodoc_typehints
 sphinxcontrib-mermaid