diff --git a/Tests/OrdersTests/OrdersTests.swift b/Tests/OrdersTests/OrdersTests.swift
index 5304452..f15334f 100644
--- a/Tests/OrdersTests/OrdersTests.swift
+++ b/Tests/OrdersTests/OrdersTests.swift
@@ -201,6 +201,14 @@ final class OrdersTests: XCTestCase {
                 XCTAssertEqual(res.status, .internalServerError)
             }
         )
+
+        // Test `OrderDataMiddleware` update method
+        orderData.title = "Test Order 2"
+        do {
+            try await orderData.update(on: app.db)
+        } catch let error as HTTPClientError {
+            XCTAssertEqual(error.self, .remoteConnectionClosed)
+        }
     }
 
     func testOrdersError() {
diff --git a/Tests/PassesTests/PassesTests.swift b/Tests/PassesTests/PassesTests.swift
index 883a551..d29fc9b 100644
--- a/Tests/PassesTests/PassesTests.swift
+++ b/Tests/PassesTests/PassesTests.swift
@@ -287,6 +287,14 @@ final class PassesTests: XCTestCase {
                 XCTAssertEqual(res.status, .internalServerError)
             }
         )
+
+        // Test `PassDataMiddleware` update method
+        passData.title = "Test Pass 2"
+        do {
+            try await passData.update(on: app.db)
+        } catch let error as HTTPClientError {
+            XCTAssertEqual(error.self, .remoteConnectionClosed)  
+        }
     }
 
     func testPassesError() {