diff --git a/pyproject.toml b/pyproject.toml
index 141d99404..d334d886e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ docs = [
     "sphinx",
     "ipython!=8.7.0",
     "myst-parser",
-    "myst-nb",
+    "myst-nb<=1.0.0",
     "pydata-sphinx-theme>=0.12.0.dev0",
     "sphinx-copybutton",
     "sphinx-autodoc-typehints",