diff --git a/Package.resolved b/Package.resolved
index f96e732..01d83c2 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -49,8 +49,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/mxcl/PromiseKit.git",
       "state" : {
-        "revision" : "1c296a8637838901d2b01e4c46875ee749506133",
-        "version" : "6.8.5"
+        "revision" : "8a98e31a47854d3180882c8068cc4d9381bf382d",
+        "version" : "6.22.1"
       }
     },
     {
diff --git a/Package.swift b/Package.swift
index 5e76b81..0f6c442 100644
--- a/Package.swift
+++ b/Package.swift
@@ -15,7 +15,7 @@ let package = Package(
         .package(url: "https://github.com/apple/swift-argument-parser", .upToNextMinor(from: "1.1.4")),
         .package(url: "https://github.com/mxcl/Path.swift.git", .upToNextMinor(from: "0.16.0")),
         .package(url: "https://github.com/mxcl/Version.git", .upToNextMinor(from: "1.0.3")),
-        .package(url: "https://github.com/mxcl/PromiseKit.git", .upToNextMinor(from: "6.8.3")),
+        .package(url: "https://github.com/mxcl/PromiseKit.git", .upToNextMinor(from: "6.22.1")),
         .package(url: "https://github.com/PromiseKit/Foundation.git", .upToNextMinor(from: "3.4.0")),
         .package(url: "https://github.com/scinfu/SwiftSoup.git", .upToNextMinor(from: "2.0.0")),
         .package(url: "https://github.com/mxcl/LegibleError.git", .upToNextMinor(from: "1.0.1")),