diff --git a/swift/example_code/swift-sdk/Waiters/Package.swift b/swift/example_code/swift-sdk/Waiters/Package.swift
index c65e216e686..65f44a81667 100644
--- a/swift/example_code/swift-sdk/Waiters/Package.swift
+++ b/swift/example_code/swift-sdk/Waiters/Package.swift
@@ -9,6 +9,11 @@ import PackageDescription
 
 let package = Package(
     name: "Waiters",
+    // Let Xcode know the minimum Apple platforms supported.
+    platforms: [
+        .macOS(.v11),
+        .iOS(.v13)
+    ],
     dependencies: [
         // This project requires the AWS SDK for Swift.
         .package(
diff --git a/swift/example_code/swift-sdk/mocking/Package.swift b/swift/example_code/swift-sdk/mocking/Package.swift
index 75db0c613b3..a8eaf8ca6f7 100644
--- a/swift/example_code/swift-sdk/mocking/Package.swift
+++ b/swift/example_code/swift-sdk/mocking/Package.swift
@@ -9,6 +9,11 @@ import PackageDescription
 
 let package = Package(
     name: "mocking",
+    // Let Xcode know the minimum Apple platforms supported.
+    platforms: [
+        .macOS(.v11),
+        .iOS(.v13)
+    ],
     dependencies: [
         // Dependencies declare other packages that this package depends on.
         .package(
diff --git a/swift/modules/SwiftUtilities/Package.swift b/swift/modules/SwiftUtilities/Package.swift
index a593702318a..e6369677ebd 100644
--- a/swift/modules/SwiftUtilities/Package.swift
+++ b/swift/modules/SwiftUtilities/Package.swift
@@ -7,6 +7,11 @@ import PackageDescription
 
 let package = Package(
     name: "SwiftUtilities",
+    // Let Xcode know the minimum Apple platforms supported.
+    platforms: [
+        .macOS(.v11),
+        .iOS(.v13)
+    ],
     products: [
         // Products define the executables and libraries a package produces.
         // They also make their own executables and libraries visible to other