diff --git a/tests/swift/tests/Package.swift b/tests/swift/tests/Package.swift
index c9a621e640e..723d4fc7270 100644
--- a/tests/swift/tests/Package.swift
+++ b/tests/swift/tests/Package.swift
@@ -26,6 +26,10 @@ let package = Package(
   dependencies: [
     .package(path: "../../.."),
     .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.4.1"),
+    // Prevent the build system from pulling 2.29.1 to prevent Swift 5.8 build breaks.
+    // The patch update introduced code that uses "switch expression syntax" that wasn't valid until Swift 5.9 [1].
+    // [1] https://github.com/swiftlang/swift-evolution/blob/main/proposals/0380-if-switch-expressions.md
+    .package(url: "https://github.com/apple/swift-nio-ssl.git", exact: "2.29.0"),
   ],
   targets: [
     .executableTarget(