diff --git a/python/requirements/rllib/requirements_rllib.txt b/python/requirements/rllib/requirements_rllib.txt
index 1cad36689b9c..32860ad53949 100644
--- a/python/requirements/rllib/requirements_rllib.txt
+++ b/python/requirements/rllib/requirements_rllib.txt
@@ -37,7 +37,7 @@ higher==0.2.1
 # For auto-generating an env-rendering Window.
 pyglet==1.5.0
 # For JSON reader/writer.
-smart_open==5.0.0
+smart_open==5.2.1
 # Ray Serve example
 starlette==0.14.2
 # ONNX