diff --git a/scico/optimize/_papgm.py b/scico/optimize/_papgm.py
index e8092bf7a..f7102c6c2 100644
--- a/scico/optimize/_papgm.py
+++ b/scico/optimize/_papgm.py
@@ -3,9 +3,9 @@
 from typing import List, Optional, Tuple, Union
 
 import scico.numpy as snp
-from scico.numpy import Array, BlockArray
 from scico.functional import Functional
 from scico.loss import Loss
+from scico.numpy import Array, BlockArray
 
 from ._common import Optimizer