diff --git a/ariadne_graphql_proxy/proxy_schema.py b/ariadne_graphql_proxy/proxy_schema.py
index 2647cfb..3560253 100644
--- a/ariadne_graphql_proxy/proxy_schema.py
+++ b/ariadne_graphql_proxy/proxy_schema.py
@@ -234,9 +234,11 @@ async def root_resolver(
                     {
                         "operationName": operation_name,
                         "query": print_ast(query_document),
-                        "variables": variables
-                        if not variables
-                        else {key: variables[key] for key in query_variables},
+                        "variables": (
+                            variables
+                            if not variables
+                            else {key: variables[key] for key in query_variables}
+                        ),
                     },
                 )
                 for schema_id, query_document, query_variables in queries
diff --git a/pyproject.toml b/pyproject.toml
index 76b6cde..e0b2fd6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dependencies = ["graphql-core>=3.2.0,<3.3", "httpx", "ariadne"]
 test = [
   "black",
   "freezegun",
-  "moto",
+  "moto[dynamodb]",
   "mypy",
   "pytest",
   "pytest-mock",
diff --git a/tests/contrib/aws/test_cache_backend.py b/tests/contrib/aws/test_cache_backend.py
index 6046c7e..e6c82de 100644
--- a/tests/contrib/aws/test_cache_backend.py
+++ b/tests/contrib/aws/test_cache_backend.py
@@ -5,7 +5,7 @@
 import boto3
 import pytest
 from freezegun import freeze_time
-from moto import mock_dynamodb
+from moto import mock_aws
 
 from ariadne_graphql_proxy.cache import CacheSerializer
 from ariadne_graphql_proxy.contrib.aws import DynamoDBCacheBackend, DynamoDBCacheError
@@ -23,7 +23,7 @@ def aws_credentials():
 
 @pytest.fixture
 def test_table(aws_credentials):
-    with mock_dynamodb():
+    with mock_aws():
         table = boto3.resource("dynamodb").create_table(
             TableName="test_table",
             KeySchema=[{"AttributeName": "key", "KeyType": "HASH"}],
@@ -38,7 +38,7 @@ def test_object_can_be_created_with_existing_table_name(test_table):
     DynamoDBCacheBackend(table_name="test_table")
 
 
-@mock_dynamodb
+@mock_aws
 def test_init_raises_dynamodb_cache_error_for_unavailable_table(aws_credentials):
     with pytest.raises(DynamoDBCacheError):
         DynamoDBCacheBackend(table_name="not_exisitng_table_name")