diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9ea2f129..81ea2bf4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
 m2r2>=0.3.4
 sphinx>=8,<9
-sphinx-autoapi>=3.8.1,<4
+sphinx-autoapi>=3.9.0,<4
 sphinx-rtd-theme>=3,<4