diff --git a/.swift-version b/.swift-version
new file mode 100644
index 0000000..73ce950
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+5.2.4
diff --git a/Package.resolved b/Package.resolved
index cf3af8f..6640bcb 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -47,12 +47,12 @@
         }
       },
       {
-        "package": "SKQueue",
-        "repositoryURL": "https://github.com/MaxDesiatov/SKQueue.git",
+        "package": "ShellOut",
+        "repositoryURL": "https://github.com/JohnSundell/ShellOut.git",
         "state": {
-          "branch": "master",
-          "revision": "448a61e772c5beb60ab035b2af140e3165f71b23",
-          "version": null
+          "branch": null,
+          "revision": "e1577acf2b6e90086d01a6d5e2b8efdaae033568",
+          "version": "2.3.0"
         }
       },
       {
@@ -136,6 +136,15 @@
           "version": "2.7.1"
         }
       },
+      {
+        "package": "swift-tools-support-core",
+        "repositoryURL": "https://github.com/apple/swift-tools-support-core.git",
+        "state": {
+          "branch": null,
+          "revision": "912919ab8441306c86c514b78800e4498ab60b60",
+          "version": "0.1.3"
+        }
+      },
       {
         "package": "vapor",
         "repositoryURL": "https://github.com/vapor/vapor.git",
diff --git a/Package.swift b/Package.swift
index ca8d7a3..dfe0d85 100644
--- a/Package.swift
+++ b/Package.swift
@@ -9,9 +9,10 @@ let package = Package(
   dependencies: [
     .package(url: "https://github.com/apple/swift-argument-parser", .upToNextMinor(from: "0.0.5")),
     .package(url: "https://github.com/vapor/vapor.git", from: "4.5.0"),
-    .package(url: "https://github.com/MaxDesiatov/SKQueue.git", .branch("master")),
+    .package(url: "https://github.com/apple/swift-tools-support-core.git", .upToNextMinor(from: "0.1.3")),
     .package(url: "https://github.com/swift-server/async-http-client.git", from: "1.1.1"),
-    .package(url: "https://github.com/NSHipster/HypertextLiteral", from: "0.0.1"),
+    .package(url: "https://github.com/NSHipster/HypertextLiteral", .upToNextMinor(from: "0.0.1")),
+    .package(url: "https://github.com/JohnSundell/ShellOut.git", from: "2.3.0"),
   ],
   targets: [
     // Targets are the basic building blocks of a package. A target can define a module or a test suite.
@@ -22,8 +23,9 @@ let package = Package(
         .product(name: "ArgumentParser", package: "swift-argument-parser"),
         .product(name: "Vapor", package: "vapor"),
         .product(name: "AsyncHTTPClient", package: "async-http-client"),
-        "SKQueue",
+        .product(name: "SwiftToolsSupport", package: "swift-tools-support-core"),
         "HypertextLiteral",
+        "ShellOut",
       ]
     ),
     .testTarget(
diff --git a/Sources/carton/Dev.swift b/Sources/carton/Dev.swift
index 888ebd2..e5ccc2d 100644
--- a/Sources/carton/Dev.swift
+++ b/Sources/carton/Dev.swift
@@ -1,4 +1,38 @@
 import ArgumentParser
+import Foundation
+import ShellOut
+
+struct ProductType: Codable {
+  let executable: String?
+  let library: [String]
+}
+
+/**
+ Simple Product structure from package dump
+ */
+struct Product: Codable {
+  let name: String
+  let type: ProductType
+}
+
+/**
+ Simple Package structure from package dump
+ */
+struct Package: Codable {
+  let name: String
+  let products: [Product]
+  let targets: [Target]
+}
+
+enum TargetType: String, Codable {
+  case regular
+  case test
+}
+
+struct Target: Codable {
+  let name: String
+  let type: TargetType
+}
 
 struct Dev: ParsableCommand {
   static var configuration = CommandConfiguration(
@@ -6,6 +40,10 @@ struct Dev: ParsableCommand {
   )
 
   func run() throws {
+    let output = try shellOut(to: "swift", arguments: ["package", "dump-package"])
+    guard let data = output.data(using: .utf8)
+    else { fatalError("failed to decode `swift package dump-package` output") }
+    try print(JSONDecoder().decode(Package.self, from: data))
     try Server.run()
   }
 }
diff --git a/TestApp/.swift-version b/TestApp/.swift-version
index 5b21a21..51d3452 100644
--- a/TestApp/.swift-version
+++ b/TestApp/.swift-version
@@ -1 +1 @@
-wasm-DEVELOPMENT-SNAPSHOT-2020-05-02-a
+wasm-DEVELOPMENT-SNAPSHOT-2020-05-25-a
diff --git a/TestApp/Package.resolved b/TestApp/Package.resolved
index e87bb2f..6f4bea8 100644
--- a/TestApp/Package.resolved
+++ b/TestApp/Package.resolved
@@ -5,9 +5,9 @@
         "package": "JavaScriptKit",
         "repositoryURL": "https://github.com/kateinoigakukun/JavaScriptKit",
         "state": {
-          "branch": null,
-          "revision": "1edcf707dcb06f50e980c6cac542f226361dc124",
-          "version": "0.3.0"
+          "branch": "b245ad5",
+          "revision": "b245ad5a2c1c4f5e519900ff06d845cbc106378a",
+          "version": null
         }
       }
     ]
diff --git a/TestApp/Package.swift b/TestApp/Package.swift
index a670d97..699b876 100644
--- a/TestApp/Package.swift
+++ b/TestApp/Package.swift
@@ -5,8 +5,11 @@ import PackageDescription
 
 let package = Package(
   name: "CartonTestApp",
+  products: [
+    .executable(name: "TestApp", targets: ["TestApp"]),
+  ],
   dependencies: [
-    .package(url: "https://github.com/kateinoigakukun/JavaScriptKit", from: "0.3.0"),
+    .package(url: "https://github.com/kateinoigakukun/JavaScriptKit", .revision("b245ad5")),
   ],
   targets: [
     // Targets are the basic building blocks of a package. A target can define a module or a test suite.