diff --git a/Package.resolved b/Package.resolved
index cf08295..904b7e2 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -15,8 +15,8 @@
         "repositoryURL": "https://github.com/mattgallagher/CwlCatchException.git",
         "state": {
           "branch": null,
-          "revision": "682841464136f8c66e04afe5dbd01ab51a3a56f2",
-          "version": "2.1.0"
+          "revision": "35f9e770f54ce62dd8526470f14c6e137cef3eea",
+          "version": "2.1.1"
         }
       },
       {
@@ -24,8 +24,8 @@
         "repositoryURL": "https://github.com/mattgallagher/CwlPreconditionTesting.git",
         "state": {
           "branch": null,
-          "revision": "0630439888c94657a235ffcd5977d6047ef3c87b",
-          "version": "2.0.1"
+          "revision": "fb7a26374e8570ff5c68142e5c83406d6abae0d8",
+          "version": "2.0.2"
         }
       },
       {
@@ -42,8 +42,8 @@
         "repositoryURL": "https://github.com/mxcl/PromiseKit.git",
         "state": {
           "branch": null,
-          "revision": "2ff97931d2721ecae9f94d8cbf4cf853a7d79180",
-          "version": "6.16.0"
+          "revision": "00afea5360bf1c02ac83209c2c8991f73b5a4e7d",
+          "version": "6.16.1"
         }
       },
       {
diff --git a/Package.swift b/Package.swift
index f7c330c..99668aa 100644
--- a/Package.swift
+++ b/Package.swift
@@ -24,7 +24,7 @@ let package = Package(
         .package(url: "https://github.com/Carthage/Commandant.git", from: "0.18.0"),
         .package(url: "https://github.com/Quick/Nimble.git", from: "9.2.1"),
         .package(url: "https://github.com/Quick/Quick.git", from: "4.0.0"),
-        .package(url: "https://github.com/mxcl/PromiseKit.git", from: "6.16.0"),
+        .package(url: "https://github.com/mxcl/PromiseKit.git", from: "6.16.1"),
         .package(url: "https://github.com/mxcl/Version.git", from: "2.0.1"),
     ],
     targets: [