diff --git a/Package.swift b/Package.swift
index fe0fa2e3..61c33667 100644
--- a/Package.swift
+++ b/Package.swift
@@ -11,7 +11,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.18.0"),
-        .package(url: "https://github.com/jpsim/Yams.git", from: "2.0.0"),
+        .package(url: "https://github.com/jpsim/Yams.git", from: "4.0.0"),
         .package(url: "https://github.com/tanner0101/mustache.git", from: "0.1.0"),
         .package(url: "https://github.com/vapor/console-kit.git", from: "4.2.0"),
     ],