diff --git a/storage/tests/test.py b/storage/tests/test.py
index 97d365119..395368af2 100755
--- a/storage/tests/test.py
+++ b/storage/tests/test.py
@@ -3,6 +3,7 @@
 from hashlib import sha256
 
 from c.storage import Storage as StorageC
+
 from python.src.storage import Storage as StoragePy
 
 
diff --git a/storage/tests/tests/common.py b/storage/tests/tests/common.py
index 9a88a9c14..ee47305c0 100644
--- a/storage/tests/tests/common.py
+++ b/storage/tests/tests/common.py
@@ -1,4 +1,5 @@
 from c.storage import Storage as StorageC
+
 from python.src import prng
 from python.src.storage import Storage as StoragePy
 
diff --git a/storage/tests/tests/test_random_upgrade.py b/storage/tests/tests/test_random_upgrade.py
index 0b573705d..a384c0674 100644
--- a/storage/tests/tests/test_random_upgrade.py
+++ b/storage/tests/tests/test_random_upgrade.py
@@ -1,9 +1,8 @@
 import hypothesis.strategies as st
-from hypothesis import assume, settings
-from hypothesis.stateful import Bundle, RuleBasedStateMachine, invariant, rule
-
 from c0.storage import Storage as StorageC0
 from c.storage import Storage as StorageC
+from hypothesis import assume, settings
+from hypothesis.stateful import Bundle, RuleBasedStateMachine, invariant, rule
 
 from . import common
 from .storage_model import StorageModel
diff --git a/storage/tests/tests/test_upgrade.py b/storage/tests/tests/test_upgrade.py
index 4d8c5805d..e18f6631f 100644
--- a/storage/tests/tests/test_upgrade.py
+++ b/storage/tests/tests/test_upgrade.py
@@ -1,5 +1,6 @@
 from c0.storage import Storage as StorageC0
 from c.storage import Storage as StorageC
+
 from python.src.storage import Storage as StoragePy
 
 from . import common