diff --git a/python/requirements/ml/requirements_rllib.txt b/python/requirements/ml/requirements_rllib.txt
index 2d23f7c1e70e..ddcc603b8584 100644
--- a/python/requirements/ml/requirements_rllib.txt
+++ b/python/requirements/ml/requirements_rllib.txt
@@ -29,7 +29,7 @@ open-spiel==1.0.2
 # For MAML on PyTorch.
 higher==0.2.1
 # For auto-generating an env-rendering Window.
-pyglet==1.5.15
+pyglet==1.5.22
 imageio-ffmpeg==0.4.5
 # For JSON reader/writer.
 smart_open==5.0.0