diff --git a/docs/requirements-doc.txt b/docs/requirements-doc.txt
index 8832b1e478a..620f8a7a560 100644
--- a/docs/requirements-doc.txt
+++ b/docs/requirements-doc.txt
@@ -14,6 +14,8 @@ sphinx<6.0.0
 sphinx-click
 # ray==2.5.0 broken: https://github.com/conda-forge/ray-packages-feedstock/issues/100
 ray[default]>=1.13.0,!=2.5.0
+# https://github.com/modin-project/modin/issues/6336
+pydantic<2
 # Override to latest version of modin-spreadsheet
 git+https://github.com/modin-project/modin-spreadsheet.git@49ffd89f683f54c311867d602c55443fb11bf2a5
 sphinxcontrib_plantuml
diff --git a/environment-dev.yml b/environment-dev.yml
index ca52f4d3509..4b22209cbff 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -6,6 +6,8 @@ dependencies:
   - numpy>=1.18.5
   # ray==2.5.0 broken: https://github.com/conda-forge/ray-packages-feedstock/issues/100
   - ray-default>=1.13.0,!=2.5.0
+  # https://github.com/modin-project/modin/issues/6336
+  - pydantic<2
   - pyarrow
   # workaround for https://github.com/conda/conda/issues/11744
   - grpcio!=1.45.*
diff --git a/examples/tutorial/jupyter/execution/pandas_on_ray/requirements.txt b/examples/tutorial/jupyter/execution/pandas_on_ray/requirements.txt
index 8cc9c67fb3b..d19ba10cd43 100644
--- a/examples/tutorial/jupyter/execution/pandas_on_ray/requirements.txt
+++ b/examples/tutorial/jupyter/execution/pandas_on_ray/requirements.txt
@@ -3,4 +3,6 @@ jupyterlab
 ipywidgets
 tqdm
 modin[ray]
+# https://github.com/modin-project/modin/issues/6336
+pydantic<2
 modin[spreadsheet]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index d4e5d7c2e46..7d56bcd71da 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,6 +4,8 @@ dask[complete]>=2.22.0
 distributed>=2.22.0
 # ray==2.5.0 broken: https://github.com/conda-forge/ray-packages-feedstock/issues/100
 ray[default]>=1.13.0,!=2.5.0
+# https://github.com/modin-project/modin/issues/6336
+pydantic<2
 pyarrow
 psutil
 fsspec
diff --git a/setup.py b/setup.py
index 3b30125ffe9..43d67ee1fb7 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,8 @@
 
 dask_deps = ["dask>=2.22.0", "distributed>=2.22.0"]
 # ray==2.5.0 broken: https://github.com/conda-forge/ray-packages-feedstock/issues/100
-ray_deps = ["ray[default]>=1.13.0,!=2.5.0", "pyarrow"]
+# pydantic<2: https://github.com/modin-project/modin/issues/6336
+ray_deps = ["ray[default]>=1.13.0,!=2.5.0", "pyarrow", "pydantic<2"]
 unidist_deps = ["unidist[mpi]>=0.2.1"]
 remote_deps = ["rpyc==4.1.5", "cloudpickle", "boto3"]
 spreadsheet_deps = ["modin-spreadsheet>=0.1.0"]