diff --git a/pyproject.toml b/pyproject.toml
index b906c89..18d431c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ dependencies = [
     "opencv-python",
     "numpy",
     "pyboy>=2",
-    "pufferlib[cleanrl]",
+    "pufferlib[cleanrl]>=0.7.3",
     "torch>=2.1",
     "torchvision",
     "wandb"