diff --git a/docs/docs_requirements.txt b/docs/docs_requirements.txt
index 0e1e3cf..f89c75a 100644
--- a/docs/docs_requirements.txt
+++ b/docs/docs_requirements.txt
@@ -1,5 +1,6 @@
-sphinx>7.0.0
+sphinx<8.20
 sphinx-rtd-theme>=2.0.0
 nbsphinx
 sphinx_copybutton
 ipython>=8.17
+