diff --git a/inbox.graphql b/inbox.graphql
index ea6c60e..58f306f 100644
--- a/inbox.graphql
+++ b/inbox.graphql
@@ -13,7 +13,7 @@ type ChatMember {
     slug: String!
     name: String!
     userpic: String
-    lastSeen: Int!
+    last_seen: Int!
     online: Boolean
     # invitedAt: DateTime
     # invitedBy: String # user slug
@@ -72,18 +72,18 @@ type Message {
     author: Int!
     chatId: String!
     body: String!
-    createdAt: Int!
+    created_at: Int!
     id: Int!
     replyTo: Int
-    updatedAt: Int
+    updated_at: Int
     seen: Boolean
 }
 
 type Chat {
     id: String!
-    createdAt: Int!
-    createdBy: Int!
-    updatedAt: Int!
+    created_at: Int!
+    created_by: Int!
+    updated_at: Int!
     title: String
     description: String
     users: [Int]
diff --git a/resolvers/load.py b/resolvers/load.py
index 6e81ec9..bd7b548 100644
--- a/resolvers/load.py
+++ b/resolvers/load.py
@@ -104,8 +104,8 @@ async def load_messages_by(_, info, by, limit: int = 10, offset: int = 0):
             messages = await load_messages(by_chat, limit, offset)
         return {
             "messages": sorted(
-                [m for m in messages if m.get("createdAt")],
-                key=lambda m: m.get("createdAt"),
+                [m for m in messages if m.get("created_at")],
+                key=lambda m: m.get("created_at"),
             ),
             "error": None,
         }
diff --git a/resolvers/search.py b/resolvers/search.py
index cd3901d..1ca877a 100644
--- a/resolvers/search.py
+++ b/resolvers/search.py
@@ -67,7 +67,7 @@ async def search_in_chats(
         if days_ago:
             mmm = list(
                 filter(
-                    lambda msg: int(datetime.now(tz=timezone.utc)) - int(msg["createdAt"])
+                    lambda msg: int(datetime.now(tz=timezone.utc)) - int(msg["created_at"])
                     < int(timedelta(days=days_ago)),
                     mmm,
                 )
diff --git a/validators/chat.py b/validators/chat.py
index af8a0d6..6f1fe87 100644
--- a/validators/chat.py
+++ b/validators/chat.py
@@ -9,9 +9,9 @@ class Chat(TypedDict):
     members: List[int]
     admins: List[int]
     title: str
-    updatedAt: Optional[int]
-    createdAt: int
-    createdBy: int
+    updated_at: Optional[int]
+    created_at: int
+    created_by: int
     description: Optional[str]
 
 
@@ -20,9 +20,9 @@ class ChatPayload(TypedDict):
     members: List[int | ChatMember]
     admins: List[int]
     title: str
-    updatedAt: Optional[int]
-    createdAt: int
-    createdBy: int
+    updated_at: Optional[int]
+    created_at: int
+    created_by: int
     description: Optional[str]
     messages: Optional[List[Message]]
     unread: Optional[List[int]]
diff --git a/validators/member.py b/validators/member.py
index 40160b2..bdf40fa 100644
--- a/validators/member.py
+++ b/validators/member.py
@@ -6,5 +6,5 @@ class ChatMember(TypedDict):
     slug: str
     name: str
     userpic: Optional[str]
-    lastSeen: int
+    last_seen: int
     online: Optional[bool]
diff --git a/validators/message.py b/validators/message.py
index afcf5c7..a4e80ca 100644
--- a/validators/message.py
+++ b/validators/message.py
@@ -6,7 +6,7 @@ class Message(TypedDict):
     chat: str
     author: int
     body: str
-    createdAt: int
-    replyTo: Optional[int]
-    createdAt: int
-    updatedAt: Optional[int]
+    created_at: int
+    reply_to: Optional[int]
+    created_at: int
+    updated_at: Optional[int]