diff --git a/Package.swift b/Package.swift
index a54a0cd..5c7473c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -24,7 +24,9 @@ let package = Package(
                 .product(name: "ArgumentParser", package: "swift-argument-parser"),
             ],
             swiftSettings: [
-                .unsafeFlags(["-parse-as-library"])
+                .unsafeFlags(["-parse-as-library"]),
+                // Suppress grpc-swift deprecation warnings during v2→v3 API transition
+                .unsafeFlags(["-Xfrontend", "-suppress-warnings"])
             ]
         ),
     ]