diff --git a/borgmatic/hooks/data_source/btrfs.py b/borgmatic/hooks/data_source/btrfs.py
index 986f25dd..4ddc2ae8 100644
--- a/borgmatic/hooks/data_source/btrfs.py
+++ b/borgmatic/hooks/data_source/btrfs.py
@@ -6,8 +6,8 @@ import shutil
 import subprocess
 
 import borgmatic.config.paths
-import borgmatic.hooks.data_source.snapshot
 import borgmatic.execute
+import borgmatic.hooks.data_source.snapshot
 
 logger = logging.getLogger(__name__)
 
diff --git a/borgmatic/hooks/data_source/lvm.py b/borgmatic/hooks/data_source/lvm.py
index 329d252a..ef5a2dca 100644
--- a/borgmatic/hooks/data_source/lvm.py
+++ b/borgmatic/hooks/data_source/lvm.py
@@ -7,8 +7,8 @@ import shutil
 import subprocess
 
 import borgmatic.config.paths
-import borgmatic.hooks.data_source.snapshot
 import borgmatic.execute
+import borgmatic.hooks.data_source.snapshot
 
 logger = logging.getLogger(__name__)
 
diff --git a/borgmatic/hooks/data_source/snapshot.py b/borgmatic/hooks/data_source/snapshot.py
index 9567d226..7b5e4503 100644
--- a/borgmatic/hooks/data_source/snapshot.py
+++ b/borgmatic/hooks/data_source/snapshot.py
@@ -1,7 +1,6 @@
 import itertools
 import pathlib
 
-
 IS_A_HOOK = False
 
 
diff --git a/borgmatic/hooks/data_source/zfs.py b/borgmatic/hooks/data_source/zfs.py
index 5903e9a4..da35a256 100644
--- a/borgmatic/hooks/data_source/zfs.py
+++ b/borgmatic/hooks/data_source/zfs.py
@@ -6,8 +6,8 @@ import shutil
 import subprocess
 
 import borgmatic.config.paths
-import borgmatic.hooks.data_source.snapshot
 import borgmatic.execute
+import borgmatic.hooks.data_source.snapshot
 
 logger = logging.getLogger(__name__)
 
diff --git a/tests/unit/hooks/data_source/test_lvm.py b/tests/unit/hooks/data_source/test_lvm.py
index 1f70087a..250fa535 100644
--- a/tests/unit/hooks/data_source/test_lvm.py
+++ b/tests/unit/hooks/data_source/test_lvm.py
@@ -1,5 +1,5 @@
-from flexmock import flexmock
 import pytest
+from flexmock import flexmock
 
 from borgmatic.hooks.data_source import lvm as module