diff --git a/examples/invoice.rs b/examples/invoice.rs
index 159eea1..47b1c73 100644
--- a/examples/invoice.rs
+++ b/examples/invoice.rs
@@ -1,4 +1,4 @@
-/* 
+/*
 use paypal_rs::{common::*, errors::*, invoice::*, Client, HeaderParams};
 
 #[tokio::main]
@@ -73,4 +73,4 @@ async fn main() -> Result<(), ResponseError> {
 }
 */
 
-fn main() {}
\ No newline at end of file
+fn main() {}
diff --git a/src/api/invoice.rs b/src/api/invoice.rs
index 611a5a6..f15db9c 100644
--- a/src/api/invoice.rs
+++ b/src/api/invoice.rs
@@ -13,7 +13,7 @@ use serde::Serialize;
 
 use crate::{
     data::{
-        invoice::{Invoice, InvoiceList, InvoicePayload, CancelReason},
+        invoice::{CancelReason, Invoice, InvoiceList, InvoicePayload},
         orders::InvoiceNumber,
     },
     endpoint::Endpoint,
@@ -158,10 +158,10 @@ impl Endpoint for ListInvoices {
     }
 }
 
-/// Deletes a draft or scheduled invoice, by ID. Deletes invoices in the draft or scheduled state only. 
-/// 
-/// For invoices that have already been sent, you can cancel the invoice. 
-/// 
+/// Deletes a draft or scheduled invoice, by ID. Deletes invoices in the draft or scheduled state only.
+///
+/// For invoices that have already been sent, you can cancel the invoice.
+///
 /// After you delete a draft or scheduled invoice, you can no longer use it or show its details. However, you can reuse its invoice number.
 #[derive(Debug, Clone)]
 pub struct DeleteInvoice {
@@ -202,7 +202,7 @@ pub struct UpdateInvoiceQuery {
 }
 
 /// Update an invoice.
-/// 
+///
 /// Fully updates an invoice, by ID. In the JSON request body, include a complete invoice object. This call does not support partial updates.
 #[derive(Debug, Clone)]
 pub struct UpdateInvoice {
@@ -215,10 +215,7 @@ pub struct UpdateInvoice {
 impl UpdateInvoice {
     /// New constructor.
     pub fn new(invoice: Invoice, query: UpdateInvoiceQuery) -> Self {
-        Self {
-            invoice,
-            query
-        }
+        Self { invoice, query }
     }
 }
 
@@ -252,16 +249,13 @@ pub struct CancelInvoice {
     /// The invoice id.
     pub invoice_id: String,
     /// The reason of the cancelation.
-    pub reason: CancelReason
+    pub reason: CancelReason,
 }
 
 impl CancelInvoice {
     /// New constructor.
     pub fn new(invoice_id: String, reason: CancelReason) -> Self {
-        Self {
-            invoice_id,
-            reason
-        }
+        Self { invoice_id, reason }
     }
 }
 
diff --git a/src/api/mod.rs b/src/api/mod.rs
index 778d0a3..28c803f 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -1,4 +1,4 @@
 //! This module contains the api endpoints.
 
+pub mod invoice;
 pub mod orders;
-pub mod invoice;
\ No newline at end of file
diff --git a/src/api/orders.rs b/src/api/orders.rs
index ece2ee6..1eb80cb 100644
--- a/src/api/orders.rs
+++ b/src/api/orders.rs
@@ -1,15 +1,14 @@
 //! An order represents a payment between two or more parties. Use the Orders API to create, update, retrieve, authorize, and capture orders.
-//! 
+//!
 //! https://developer.paypal.com/docs/api/orders/v2/
 
 use std::borrow::Cow;
 
 use derive_builder::Builder;
 use serde::Serialize;
-use serde_json::json;
 
 use crate::{
-    data::orders::{Order, OrderPayload, PaymentSourceResponse},
+    data::orders::{Order, OrderPayload},
     endpoint::Endpoint,
 };
 
@@ -87,7 +86,7 @@ pub struct PaymentSourceToken {
     /// The PayPal-generated ID for the token.
     pub id: String,
     /// The tokenization method that generated the ID.
-    /// 
+    ///
     /// Can only be BILLING_AGREEMENT.
     pub r#type: String,
 }
@@ -106,15 +105,15 @@ pub struct PaymentSourceBody {
     pub payment_source: PaymentSource,
 }
 
-/// Captures payment for an order. To successfully capture payment for an order, 
-/// the buyer must first approve the order or a valid payment_source must be provided in the request. 
+/// Captures payment for an order. To successfully capture payment for an order,
+/// the buyer must first approve the order or a valid payment_source must be provided in the request.
 /// A buyer can approve the order upon being redirected to the rel:approve URL that was returned in the HATEOAS links in the create order response.
 #[derive(Debug, Clone, Builder)]
 pub struct CaptureOrder {
     /// The id of the order.
     pub order_id: String,
     /// The endpoint body.
-    pub body: Option<PaymentSourceBody>
+    pub body: Option<PaymentSourceBody>,
 }
 
 impl CaptureOrder {
@@ -147,15 +146,15 @@ impl Endpoint for CaptureOrder {
     }
 }
 
-/// Authorizes payment for an order. To successfully authorize payment for an order, 
-/// the buyer must first approve the order or a valid payment_source must be provided in the request. 
+/// Authorizes payment for an order. To successfully authorize payment for an order,
+/// the buyer must first approve the order or a valid payment_source must be provided in the request.
 /// A buyer can approve the order upon being redirected to the rel:approve URL that was returned in the HATEOAS links in the create order response.
 #[derive(Debug)]
 pub struct AuthorizeOrder {
     /// The order id.
     order_id: String,
     /// The endpoint body.
-    pub body: Option<PaymentSourceBody>
+    pub body: Option<PaymentSourceBody>,
 }
 
 impl AuthorizeOrder {
diff --git a/src/client.rs b/src/client.rs
index 97abf72..8fcf82c 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -218,7 +218,7 @@ impl Client {
     }
 
     /// Executes the given endpoints with the default headers.
-    /// 
+    ///
     /// You must remember to call `get_access_token` first or this may fail due to not being authed.
     pub async fn execute<E>(&self, endpoint: E) -> Result<E::Response, ResponseError>
     where
diff --git a/src/data/invoice.rs b/src/data/invoice.rs
index e58992e..26624f8 100644
--- a/src/data/invoice.rs
+++ b/src/data/invoice.rs
@@ -1,6 +1,6 @@
 //! Paypal object definitions used in the invoice api.
 
-use crate::{data::common::*, data::common::LinkDescription};
+use crate::{data::common::LinkDescription, data::common::*};
 use derive_builder::Builder;
 use serde::{Deserialize, Serialize};
 use serde_with::skip_serializing_none;
@@ -632,4 +632,4 @@ pub struct RecordPaymentPayload {
     amount: Amount,
 
     shipping_info: Option<ContactInformation>,
-}
\ No newline at end of file
+}
diff --git a/src/data/mod.rs b/src/data/mod.rs
index ecc762c..bd1df39 100644
--- a/src/data/mod.rs
+++ b/src/data/mod.rs
@@ -1,5 +1,5 @@
 //! This module contains the data structures used in the api endpoints.
 
 pub mod common;
+pub mod invoice;
 pub mod orders;
-pub mod invoice;
\ No newline at end of file
diff --git a/src/data/orders.rs b/src/data/orders.rs
index 0beb13a..151205e 100644
--- a/src/data/orders.rs
+++ b/src/data/orders.rs
@@ -1,8 +1,6 @@
 //! Paypal object definitions used by the orders api.
 
 use super::common::*;
-use crate::errors::{PaypalError, ResponseError};
-use crate::HeaderParams;
 use derive_builder::Builder;
 use serde::{Deserialize, Serialize};
 use serde_with::skip_serializing_none;
@@ -726,4 +724,4 @@ pub struct Order {
 pub struct InvoiceNumber {
     /// The invoice number.
     pub invoice_number: String,
-}
\ No newline at end of file
+}
diff --git a/src/endpoint.rs b/src/endpoint.rs
index 4600678..c6b8f1c 100644
--- a/src/endpoint.rs
+++ b/src/endpoint.rs
@@ -1,8 +1,8 @@
 //! This module contains the endpoint trait used to implemented api endpoints.
 
+use crate::{LIVE_ENDPOINT, SANDBOX_ENDPOINT};
+use serde::{de::DeserializeOwned, Serialize};
 use std::borrow::Cow;
-use serde::{Serialize, de::DeserializeOwned};
-use crate::{SANDBOX_ENDPOINT, LIVE_ENDPOINT};
 
 /// A trait implemented by api endpoints.
 pub trait Endpoint {
@@ -30,7 +30,7 @@ pub trait Endpoint {
     }
 
     /// The full path of this endpoint.
-    /// 
+    ///
     /// Automatically implemented.
     fn full_path(&self, is_sandbox: bool) -> String {
         if is_sandbox {
@@ -39,4 +39,4 @@ pub trait Endpoint {
             format!("{}{}", LIVE_ENDPOINT, self.relative_path())
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/lib.rs b/src/lib.rs
index d7ee75e..405c76e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -75,13 +75,14 @@
 //! - [ ] Payment Experience Web Profiles API - 1.0.0
 
 #![deny(missing_docs)]
+#![forbid(unsafe_code)]
 
 pub mod api;
+pub mod client;
 pub mod countries;
 pub mod data;
 pub mod endpoint;
 pub mod errors;
-pub mod client;
 pub use client::*;
 
 use derive_builder::Builder;
@@ -160,9 +161,9 @@ struct AuthAssertionClaims {
 
 #[cfg(test)]
 mod tests {
-    use crate::{countries::Country};
+    use crate::countries::Country;
     use crate::data::common::Currency;
-    use crate::{Client};
+    use crate::Client;
     use std::env;
     use std::str::FromStr;