diff --git a/src/backend/langflow/api/v1/users.py b/src/backend/langflow/api/v1/users.py
index 9541bb2d4..aef639b0a 100644
--- a/src/backend/langflow/api/v1/users.py
+++ b/src/backend/langflow/api/v1/users.py
@@ -67,7 +67,7 @@ def read_current_user(
 def read_all_users(
     skip: int = 0,
     limit: int = 10,
-    current_user: Session = Depends(get_current_active_superuser),
+    _: Session = Depends(get_current_active_superuser),
     session: Session = Depends(get_session),
 ) -> UsersResponse:
     """
diff --git a/src/backend/langflow/services/database/models/api_key/api_key.py b/src/backend/langflow/services/database/models/api_key/api_key.py
index 5d5bab0f4..0f0d2f889 100644
--- a/src/backend/langflow/services/database/models/api_key/api_key.py
+++ b/src/backend/langflow/services/database/models/api_key/api_key.py
@@ -22,8 +22,12 @@ class ApiKey(ApiKeyBase, table=True):
 
     api_key: str = Field(index=True, unique=True)
     # User relationship
+    # Delete API keys when user is deleted
     user_id: UUID = Field(index=True, foreign_key="user.id")
-    user: "User" = Relationship(back_populates="api_keys")
+    user: "User" = Relationship(
+        back_populates="api_keys",
+        sa_relationship_kwargs={"cascade": "delete"},
+    )
 
 
 class ApiKeyCreate(ApiKeyBase):