diff --git a/packages/python/plotly/test_requirements/requirements_39_pandas_2_optional.txt b/packages/python/plotly/test_requirements/requirements_39_pandas_2_optional.txt
index e7f16aeecc8..a36c1c53d04 100644
--- a/packages/python/plotly/test_requirements/requirements_39_pandas_2_optional.txt
+++ b/packages/python/plotly/test_requirements/requirements_39_pandas_2_optional.txt
@@ -20,4 +20,5 @@ scikit-image==0.18.1
 psutil==5.7.0
 kaleido
 vaex
+pydantic<=1.10.11 # for vaex, see https://github.com/vaexio/vaex/issues/2384
 polars