diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6c899c44..8180db49 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,8 +3,10 @@
 tox==4.32.0 ; python_version >= "3.10"
 tox==4.32.0 ; python_version < "3.10"
 wheel==0.46.1
-Sphinx==7.4.7
-sphinx-rtd-theme==3.0.2
+Sphinx==9.0.4 ; python_version >= "3.11"
+Sphinx==7.4.7 ; python_version < "3.11"
+sphinx-rtd-theme==3.1.0rc1 ; python_version >= "3.11"
+sphinx-rtd-theme==3.0.2 ; python_version < "3.11"
 pypandoc==1.16.2
 twine==6.2.0
 black==25.12.0