diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 7d72db2a1..3d017fac0 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -2,7 +2,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.9"
+    python: "3.11"
 sphinx:
   configuration: docs/conf.py
   fail_on_warning: false
diff --git a/requirements_docs.txt b/requirements_docs.txt
index 8f4410960..c8ae06ee6 100644
--- a/requirements_docs.txt
+++ b/requirements_docs.txt
@@ -1,4 +1,4 @@
-sphinx>4
+sphinx>=6
 ipython<=8.12
 matplotlib
 mip>=1.13
@@ -16,7 +16,7 @@ dask[complete]
 setuptools>=41.2
 Serialize
 pygments>=2.4
-sphinx-book-theme==0.3.3
+sphinx-book-theme>=1.1.0
 sphinx_copybutton
 sphinx_design
 typing_extensions