diff --git a/Tests/GRPCHTTP2CoreTests/Client/HTTP2ClientTransportConfigTests.swift b/Tests/GRPCHTTP2CoreTests/Client/HTTP2ClientTransportConfigTests.swift
index c5853196a..b376f8fcd 100644
--- a/Tests/GRPCHTTP2CoreTests/Client/HTTP2ClientTransportConfigTests.swift
+++ b/Tests/GRPCHTTP2CoreTests/Client/HTTP2ClientTransportConfigTests.swift
@@ -17,6 +17,7 @@
 import GRPCHTTP2Core
 import XCTest
 
+@available(macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0, *)
 final class HTTP2ClientTransportConfigTests: XCTestCase {
   func testCompressionDefaults() {
     let config = HTTP2ClientTransport.Config.Compression.defaults