diff --git a/spond/club.py b/spond/club.py
index 6f98015..0beaa03 100644
--- a/spond/club.py
+++ b/spond/club.py
@@ -6,7 +6,7 @@
 
 
 class SpondClub(_SpondBase):
-    def __init__(self, username, password):
+    def __init__(self, username: str, password: str) -> None:
         super().__init__(username, password, "https://api.spond.com/club/v1/")
         self.transactions = None
 
diff --git a/spond/spond.py b/spond/spond.py
index 8dbf0b5..685766e 100644
--- a/spond/spond.py
+++ b/spond/spond.py
@@ -14,7 +14,7 @@ class Spond(_SpondBase):
 
     DT_FORMAT = "%Y-%m-%dT00:00:00.000Z"
 
-    def __init__(self, username, password):
+    def __init__(self, username: str, password: str) -> None:
         super().__init__(username, password, "https://api.spond.com/core/v1/")
         self.chat_url = None
         self.auth = None