diff --git a/pyproject.toml b/pyproject.toml
index 2b25e448..aef865ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dependencies = [
 
 [project.optional-dependencies]
 docs = [
-    "jupyter-book==1.0.4",
+    "jupyter-book==2.1.2",
     "sphinx-book-theme",
 ]
 develop = [