diff --git a/pyproject.toml b/pyproject.toml
index d99f6424..250324a4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ dependencies = [
 
 [project.optional-dependencies]
 docs = [
-    "jupyter-book==1.0.4",
+    "jupyter-book==2.1.6",
     "sphinx-book-theme"
 ]
 develop = [