diff --git a/.github/workflows/regression_test.yml b/.github/workflows/regression_test.yml
index 971515747e..4b7877ea91 100644
--- a/.github/workflows/regression_test.yml
+++ b/.github/workflows/regression_test.yml
@@ -58,7 +58,7 @@ jobs:
       gpu-arch-type: ${{ matrix.gpu-arch-type }}
       gpu-arch-version: ${{ matrix.gpu-arch-version }}
       script: |
-        conda create -n venv python=3.9 -y
+        conda create -n venv python=3.8 -y
         conda activate venv
         echo "::group::Install newer objcopy that supports --set-section-alignment"
         yum install -y  devtoolset-10-binutils
diff --git a/torchao/quantization/fp6_llm.py b/torchao/quantization/fp6_llm.py
index 0fb0f7dd98..0c405b8235 100644
--- a/torchao/quantization/fp6_llm.py
+++ b/torchao/quantization/fp6_llm.py
@@ -1,5 +1,5 @@
 import math
-from typing import Optional
+from typing import List, Optional
 
 import torch
 from torch import nn, Tensor
@@ -291,7 +291,7 @@ def extra_repr(self) -> str:
         return f'in_features={self.in_features}, out_features={self.out_features}, bias={self.bias is not None}'
 
 
-def convert_fp6_llm(model: nn.Module, skip_fqn_list: Optional[list[str]] = None, cur_fqn: str = "") -> None:
+def convert_fp6_llm(model: nn.Module, skip_fqn_list: Optional[List[str]] = None, cur_fqn: str = "") -> None:
     for name, child in model.named_children():
         new_fqn = name if cur_fqn == "" else f"{cur_fqn}.{name}"