diff --git a/Package.swift b/Package.swift
index fc530b34f4..115daefca5 100644
--- a/Package.swift
+++ b/Package.swift
@@ -65,6 +65,7 @@ let package = Package(
         .define("HAVE_FULLFSYNC", to: "1"),
         .headerSearchPath("./"),
         .headerSearchPath("include/"),
+        .unsafeFlags(["-Wno-conversion"]),
       ]
     ),
   ],