diff --git a/.gitignore b/.gitignore
index 46d8d39..de2824b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,6 +52,6 @@ playground.xcworkspace
 # Carthage
 #
 # Add this line if you want to avoid checking in source code from Carthage dependencies.
-# Carthage/Checkouts
+Carthage/Checkouts
 
 Carthage/Build
diff --git a/.gitmodules b/.gitmodules
index cd4bff8..e69de29 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,12 +0,0 @@
-[submodule "Carthage/Checkouts/Nimble"]
-	path = Carthage/Checkouts/Nimble
-	url = https://github.com/Quick/Nimble.git
-[submodule "Carthage/Checkouts/Quick"]
-	path = Carthage/Checkouts/Quick
-	url = https://github.com/Quick/Quick.git
-[submodule "Carthage/Checkouts/xcconfigs"]
-	path = Carthage/Checkouts/xcconfigs
-	url = https://github.com/jspahrsummers/xcconfigs.git
-[submodule "Carthage/Checkouts/ReactiveSwift"]
-	path = Carthage/Checkouts/ReactiveSwift
-	url = https://github.com/ReactiveCocoa/ReactiveSwift.git
diff --git a/Cartfile.private b/Cartfile.private
index a91b4bd..041bc60 100644
--- a/Cartfile.private
+++ b/Cartfile.private
@@ -1,3 +1,3 @@
 github "jspahrsummers/xcconfigs" "3d9d996"
-github "Quick/Quick" ~> 2.0
-github "Quick/Nimble" ~> 8.0
+github "Quick/Quick" ~> 4.0
+github "Quick/Nimble" ~> 9.0
diff --git a/Cartfile.resolved b/Cartfile.resolved
index d7c9a33..c5ae3ea 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,4 +1,4 @@
-github "Quick/Nimble" "v8.0.1"
-github "Quick/Quick" "v2.1.0"
-github "ReactiveCocoa/ReactiveSwift" "6.0.0"
+github "Quick/Nimble" "v9.2.0"
+github "Quick/Quick" "v4.0.0"
+github "ReactiveCocoa/ReactiveSwift" "6.6.0"
 github "jspahrsummers/xcconfigs" "3d9d99634cae6d586e272543d527681283b33eb0"
diff --git a/Carthage/Checkouts/Nimble b/Carthage/Checkouts/Nimble
deleted file mode 160000
index 43304bf..0000000
--- a/Carthage/Checkouts/Nimble
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 43304bf2b1579fd555f2fdd51742771c1e4f2b98
diff --git a/Carthage/Checkouts/Quick b/Carthage/Checkouts/Quick
deleted file mode 160000
index 94df9b4..0000000
--- a/Carthage/Checkouts/Quick
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 94df9b449508344667e5afc7e80f8bcbff1e4c37
diff --git a/Carthage/Checkouts/ReactiveSwift b/Carthage/Checkouts/ReactiveSwift
deleted file mode 160000
index 3eba2b4..0000000
--- a/Carthage/Checkouts/ReactiveSwift
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3eba2b48ee80f87058de5ae8bb41e585bde5c997
diff --git a/Carthage/Checkouts/xcconfigs b/Carthage/Checkouts/xcconfigs
deleted file mode 160000
index 3d9d996..0000000
--- a/Carthage/Checkouts/xcconfigs
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 3d9d99634cae6d586e272543d527681283b33eb0
diff --git a/Package.resolved b/Package.resolved
index 30e9c47..e1f6e89 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -1,13 +1,31 @@
 {
   "object": {
     "pins": [
+      {
+        "package": "CwlCatchException",
+        "repositoryURL": "https://github.com/mattgallagher/CwlCatchException.git",
+        "state": {
+          "branch": null,
+          "revision": "682841464136f8c66e04afe5dbd01ab51a3a56f2",
+          "version": "2.1.0"
+        }
+      },
+      {
+        "package": "CwlPreconditionTesting",
+        "repositoryURL": "https://github.com/mattgallagher/CwlPreconditionTesting.git",
+        "state": {
+          "branch": null,
+          "revision": "02b7a39a99c4da27abe03cab2053a9034379639f",
+          "version": "2.0.0"
+        }
+      },
       {
         "package": "Nimble",
         "repositoryURL": "https://github.com/Quick/Nimble.git",
         "state": {
           "branch": null,
-          "revision": "43304bf2b1579fd555f2fdd51742771c1e4f2b98",
-          "version": "8.0.1"
+          "revision": "af1730dde4e6c0d45bf01b99f8a41713ce536790",
+          "version": "9.2.0"
         }
       },
       {
@@ -15,8 +33,8 @@
         "repositoryURL": "https://github.com/Quick/Quick.git",
         "state": {
           "branch": null,
-          "revision": "0b4ed6c706dd0cce923b5019a605a9bcc6b1b600",
-          "version": "2.0.0"
+          "revision": "bd86ca0141e3cfb333546de5a11ede63f0c4a0e6",
+          "version": "4.0.0"
         }
       },
       {
@@ -24,8 +42,8 @@
         "repositoryURL": "https://github.com/ReactiveCocoa/ReactiveSwift.git",
         "state": {
           "branch": null,
-          "revision": "3eba2b48ee80f87058de5ae8bb41e585bde5c997",
-          "version": "6.0.0"
+          "revision": "4a8e1e4a683e96daf658f68132dae781738bc862",
+          "version": "6.6.0"
         }
       }
     ]
diff --git a/Package.swift b/Package.swift
index 5fa5834..19e457e 100644
--- a/Package.swift
+++ b/Package.swift
@@ -8,8 +8,8 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/ReactiveCocoa/ReactiveSwift.git", from: "6.0.0"),
-        .package(url: "https://github.com/Quick/Quick.git", from: "2.0.0"),
-        .package(url: "https://github.com/Quick/Nimble.git", from: "8.0.1")
+        .package(url: "https://github.com/Quick/Quick.git", from: "4.0.0"),
+        .package(url: "https://github.com/Quick/Nimble.git", from: "9.2.0")
     ],
     targets: [
         .target(name: "ReactiveTask", dependencies: ["ReactiveSwift"], path: "Sources"),
diff --git a/Sources/Task.swift b/Sources/Task.swift
index cbc2729..1117033 100644
--- a/Sources/Task.swift
+++ b/Sources/Task.swift
@@ -375,7 +375,7 @@ extension Signal where Value: TaskEventType {
 	/// Ignores incremental standard output and standard error data from the given
 	/// task, sending only a single value with the final, aggregated result.
 	public func ignoreTaskData() -> Signal<Value.T, Error> {
-		return self.filterMap { $0.value }
+    return self.compactMap { $0.value }
 	}
 }
 
diff --git a/Tests/ReactiveTaskTests/TaskSpec.swift b/Tests/ReactiveTaskTests/TaskSpec.swift
index 3ce2d50..7e55485 100644
--- a/Tests/ReactiveTaskTests/TaskSpec.swift
+++ b/Tests/ReactiveTaskTests/TaskSpec.swift
@@ -29,7 +29,7 @@ class TaskSpec: QuickSpec {
 				})
 				.wait()
 
-			expect(result.error).to(beNil())
+			expect(try result.get()).notTo(throwError())
 			expect(isLaunched) == true
 		}
 
@@ -46,7 +46,7 @@ class TaskSpec: QuickSpec {
 				.single()
 
 			expect(result).notTo(beNil())
-			if let data = result?.value {
+      if case let .success(data) = result {
 				expect(String(data: data, encoding: .utf8)).to(equal("foobar\n"))
 			}
 		}
@@ -63,7 +63,7 @@ class TaskSpec: QuickSpec {
 				.single()
 
 			expect(result).notTo(beNil())
-			expect(result?.error).notTo(beNil())
+      expect(try result?.get()).to(throwError())
 			expect(String(data: aggregated, encoding: .utf8)).to(equal("stat: not-a-real-file: stat: No such file or directory\n"))
 		}
 
@@ -72,11 +72,11 @@ class TaskSpec: QuickSpec {
 			let data = strings.map { $0.data(using: .utf8)! }
 
 			let result = Task("/usr/bin/sort").launch(standardInput: SignalProducer(data))
-				.filterMap { event in event.value }
+        .compactMap { event in event.value }
 				.single()
 
 			expect(result).notTo(beNil())
-			if let data = result?.value {
+      if case let .success(data) = result {
 				expect(String(data: data, encoding: .utf8)).to(equal("bar\nbuzz\nfoo\nfuzz\n"))
 			}
 		}
@@ -87,11 +87,13 @@ class TaskSpec: QuickSpec {
 				.wait()
 
 			expect(result).notTo(beNil())
-			expect(result.error).notTo(beNil())
-			expect(result.error) == TaskError.shellTaskFailed(task, exitCode: 1, standardError: "stat: not-a-real-file: stat: No such file or directory\n")
-			if let error = result.error {
-				expect(error.description) == "A shell task (/usr/bin/stat not-a-real-file) failed with exit code 1:\nstat: not-a-real-file: stat: No such file or directory\n"
-			}
+      switch result {
+        case let .failure(error):
+          expect(error) == TaskError.shellTaskFailed(task, exitCode: 1, standardError: "stat: not-a-real-file: stat: No such file or directory\n")
+          expect(error.description) == "A shell task (/usr/bin/stat not-a-real-file) failed with exit code 1:\nstat: not-a-real-file: stat: No such file or directory\n"
+        case .success:
+          fail("Error expected")
+      }
 		}
 	}
 }