diff --git a/.github/workflows/building-wheels.yml b/.github/workflows/building-wheels.yml
index b6f021b..71ffb4f 100644
--- a/.github/workflows/building-wheels.yml
+++ b/.github/workflows/building-wheels.yml
@@ -27,6 +27,8 @@ jobs:
             python3 -m virtualenv -p python3 py3
             . py3/bin/activate
             which python
+            # Revert setuptools for compatibility with ray dashboard.
+            pip install setuptools==69.5.1
             pip install pytest torch cloudpickle cryptography
             pip install ray==2.0.0
 
diff --git a/.github/workflows/test_on_ray1.13.0.yml b/.github/workflows/test_on_ray1.13.0.yml
index 39ad66f..6e34218 100644
--- a/.github/workflows/test_on_ray1.13.0.yml
+++ b/.github/workflows/test_on_ray1.13.0.yml
@@ -27,6 +27,8 @@ jobs:
             python3 -m virtualenv -p python3 py3
             . py3/bin/activate
             which python
+            # Revert setuptools for compatibility with ray dashboard.
+            pip install setuptools==69.5.1
             pip install pytest torch cloudpickle cryptography
             pip install ray==1.13.0
 
diff --git a/.github/workflows/unit_tests_for_protobuf_matrix.yml b/.github/workflows/unit_tests_for_protobuf_matrix.yml
index b5024b7..c007477 100644
--- a/.github/workflows/unit_tests_for_protobuf_matrix.yml
+++ b/.github/workflows/unit_tests_for_protobuf_matrix.yml
@@ -31,6 +31,8 @@ jobs:
             python3 -m virtualenv -p python3 py3
             . py3/bin/activate
             which python
+            # Revert setuptools for compatibility with ray dashboard.
+            pip install setuptools==69.5.1
             pip install pytest torch cloudpickle cryptography numpy
             pip install protobuf==${{ matrix.protobuf_ver }}
             pip install ray==2.4.0
diff --git a/.github/workflows/unit_tests_on_ray_matrix.yml b/.github/workflows/unit_tests_on_ray_matrix.yml
index 42b2861..0718c7f 100644
--- a/.github/workflows/unit_tests_on_ray_matrix.yml
+++ b/.github/workflows/unit_tests_on_ray_matrix.yml
@@ -32,6 +32,8 @@ jobs:
             python3 -m virtualenv -p python3 py3
             . py3/bin/activate
             which python
+            # Revert setuptools for compatibility with ray dashboard.
+            pip install setuptools==69.5.1
             pip install pytest
             pip install -r dev-requirements.txt
             pip install ray==${{ matrix.ray_version }}