diff --git a/lambdas/pkgpush/tests/test_copy.py b/lambdas/pkgpush/tests/test_copy.py
index bd2b529b7ee..d8297c129b0 100644
--- a/lambdas/pkgpush/tests/test_copy.py
+++ b/lambdas/pkgpush/tests/test_copy.py
@@ -7,7 +7,6 @@
 from quilt_shared.aws import AWSCredentials
 from quilt_shared.types import NonEmptyStr
 
-
 CREDENTIALS = AWSCredentials(
     key=NonEmptyStr("test_aws_access_key_id"),
     secret=NonEmptyStr("test_aws_secret_access_key"),
diff --git a/lambdas/pkgpush/tests/test_hash_calc.py b/lambdas/pkgpush/tests/test_hash_calc.py
index 7247c40380f..b251dfc0957 100644
--- a/lambdas/pkgpush/tests/test_hash_calc.py
+++ b/lambdas/pkgpush/tests/test_hash_calc.py
@@ -13,7 +13,6 @@
 from quilt_shared.pkgpush import Checksum, ChecksumType
 from quilt_shared.types import NonEmptyStr
 
-
 CREDENTIALS = AWSCredentials(
     key=NonEmptyStr("test_aws_access_key_id"),
     secret=NonEmptyStr("test_aws_secret_access_key"),
diff --git a/lambdas/s3hash/tests/conftest.py b/lambdas/s3hash/tests/conftest.py
index 9349bd15d41..705ac556d72 100644
--- a/lambdas/s3hash/tests/conftest.py
+++ b/lambdas/s3hash/tests/conftest.py
@@ -1,11 +1,10 @@
 import asyncio
 
-from botocore.stub import Stubber
 import pytest
+from botocore.stub import Stubber
 
 import t4_lambda_s3hash as s3hash
 
-
 AWS_CREDENTIALS = s3hash.AWSCredentials.parse_obj(
     {
         "key": "test-key",
diff --git a/lambdas/s3hash/tests/test_mpu_dst.py b/lambdas/s3hash/tests/test_mpu_dst.py
index 3af9d788d42..f8b8f7bae81 100644
--- a/lambdas/s3hash/tests/test_mpu_dst.py
+++ b/lambdas/s3hash/tests/test_mpu_dst.py
@@ -1,5 +1,5 @@
-from botocore.stub import Stubber
 import pytest
+from botocore.stub import Stubber
 
 import t4_lambda_s3hash as s3hash