diff --git a/prowler/providers/aws/lib/service/service.py b/prowler/providers/aws/lib/service/service.py
index fac34057..0badb1a8 100644
--- a/prowler/providers/aws/lib/service/service.py
+++ b/prowler/providers/aws/lib/service/service.py
@@ -4,6 +4,7 @@ from prowler.providers.aws.aws_provider import (
     generate_regional_clients,
     get_default_region,
 )
+from prowler.providers.aws.lib.audit_info.models import AWS_Audit_Info
 
 
 class AWSService:
@@ -14,7 +15,7 @@ class AWSService:
     - Also handles if the AWS Service is Global
     """
 
-    def __init__(self, service, audit_info, global_service=False):
+    def __init__(self, service: str, audit_info: AWS_Audit_Info, global_service=False):
         # Audit Information
         self.audit_info = audit_info
         self.audited_account = audit_info.audited_account
diff --git a/prowler/providers/azure/lib/service/service.py b/prowler/providers/azure/lib/service/service.py
index f888bfe4..f45747c5 100644
--- a/prowler/providers/azure/lib/service/service.py
+++ b/prowler/providers/azure/lib/service/service.py
@@ -1,11 +1,12 @@
 from prowler.lib.logger import logger
+from prowler.providers.azure.lib.audit_info.models import Azure_Audit_Info
 
 
 class AzureService:
     def __init__(
         self,
-        service,
-        audit_info,
+        service: str,
+        audit_info: Azure_Audit_Info,
     ):
         self.clients = self.__set_clients__(
             audit_info.identity.subscriptions, audit_info.credentials, service
diff --git a/prowler/providers/gcp/lib/service/service.py b/prowler/providers/gcp/lib/service/service.py
index 43ebd45f..fcff8938 100644
--- a/prowler/providers/gcp/lib/service/service.py
+++ b/prowler/providers/gcp/lib/service/service.py
@@ -6,10 +6,17 @@ from googleapiclient import discovery
 
 from prowler.lib.logger import logger
 from prowler.providers.gcp.gcp_provider import generate_client
+from prowler.providers.gcp.lib.audit_info.models import GCP_Audit_Info
 
 
 class GCPService:
-    def __init__(self, service, audit_info, region="global", api_version="v1"):
+    def __init__(
+        self,
+        service: str,
+        audit_info: GCP_Audit_Info,
+        region="global",
+        api_version="v1",
+    ):
         # We receive the service using __class__.__name__ or the service name in lowercase
         # e.g.: APIKeys --> we need a lowercase string, so service.lower()
         self.service = service.lower() if not service.islower() else service