diff --git a/Package.swift b/Package.swift
index bebbf51a..f5a3e310 100644
--- a/Package.swift
+++ b/Package.swift
@@ -56,7 +56,7 @@ let package = Package(
         ),
         .package(
             url: "https://github.com/jpsim/Yams.git",
-            from: "4.0.0"
+            "4.0.0"..<"6.0.0"
         ),
 
         // CLI Tool