diff --git a/pyproject.toml b/pyproject.toml
index c860cff..89b681f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -77,7 +77,7 @@ doc = [
   "mkdocs-gen-files~=0.5.0",
   "mkdocs-literate-nav~=0.6.1",
   "mkdocs-section-index~=0.3.9",
-  "mkdocs-typer2~=0.1.4",
+  "mkdocs-typer2>=0.1.4,<0.5.0",
   "mkdocs-material~=9.7.6",
   "mkdocs-jupyter~=0.25.1",
   #"mike~=1.1.2",