diff --git a/client/requirements.txt b/client/requirements.txt
index 9d1f6359b..fc8982f56 100644
--- a/client/requirements.txt
+++ b/client/requirements.txt
@@ -3,7 +3,8 @@ requests>=2.31.0
 importlib-metadata>=5.2.0
 qiskit>=0.44.3
 qiskit-ibm-runtime>=0.13.0
-cloudpickle>=2.2.1
+# TODO: make sure ray node and notebook node have the same version of cloudpickle
+cloudpickle==2.2.1
 tqdm>=4.65.0
 # opentelemetry
 opentelemetry-api>=1.18.0