diff --git a/graphene/relay/connection.py b/graphene/relay/connection.py
index d9b5a932..c05160b5 100644
--- a/graphene/relay/connection.py
+++ b/graphene/relay/connection.py
@@ -1,5 +1,6 @@
 import re
 from collections import OrderedDict
+
 try:
     from collections.abc import Iterable
 except ImportError:
diff --git a/graphene/types/field.py b/graphene/types/field.py
index b184a31d..39db65e9 100644
--- a/graphene/types/field.py
+++ b/graphene/types/field.py
@@ -1,5 +1,6 @@
 import inspect
 from collections import OrderedDict
+
 try:
     from collections.abc import Mapping
 except ImportError:
diff --git a/graphene/utils/crunch.py b/graphene/utils/crunch.py
index 9fc2a2ae..a84a0d31 100644
--- a/graphene/utils/crunch.py
+++ b/graphene/utils/crunch.py
@@ -1,4 +1,5 @@
 import json
+
 try:
     from collections.abc import Mapping
 except ImportError:
diff --git a/graphene/utils/deduplicator.py b/graphene/utils/deduplicator.py
index 66d17230..57980772 100644
--- a/graphene/utils/deduplicator.py
+++ b/graphene/utils/deduplicator.py
@@ -1,4 +1,5 @@
 from collections import OrderedDict
+
 try:
     from collections.abc import Mapping
 except ImportError: