diff --git a/Package.resolved b/Package.resolved
index 65539f7..57457a8 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -1,22 +1,40 @@
 {
   "object": {
     "pins": [
+      {
+        "package": "CwlCatchException",
+        "repositoryURL": "https://github.com/mattgallagher/CwlCatchException.git",
+        "state": {
+          "branch": null,
+          "revision": "35f9e770f54ce62dd8526470f14c6e137cef3eea",
+          "version": "2.1.1"
+        }
+      },
+      {
+        "package": "CwlPreconditionTesting",
+        "repositoryURL": "https://github.com/mattgallagher/CwlPreconditionTesting.git",
+        "state": {
+          "branch": null,
+          "revision": "fb7a26374e8570ff5c68142e5c83406d6abae0d8",
+          "version": "2.0.2"
+        }
+      },
       {
         "package": "Nimble",
         "repositoryURL": "https://github.com/Quick/Nimble.git",
         "state": {
           "branch": null,
-          "revision": "7a46a5fc86cb917f69e3daf79fcb045283d8f008",
-          "version": "8.1.2"
+          "revision": "c93f16c25af5770f0d3e6af27c9634640946b068",
+          "version": "9.2.1"
         }
       },
       {
         "package": "Quick",
         "repositoryURL": "https://github.com/Quick/Quick.git",
         "state": {
-          "branch": "quickobjcruntime-umbrella-header",
-          "revision": "201151b82a7aa8c5b3bf1af79816fb12a4bac03a",
-          "version": null
+          "branch": null,
+          "revision": "bd86ca0141e3cfb333546de5a11ede63f0c4a0e6",
+          "version": "4.0.0"
         }
       }
     ]
diff --git a/Package.swift b/Package.swift
index fb9f4b3..c824866 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.2
+// swift-tools-version:5.3
 
 import PackageDescription
 
@@ -9,8 +9,8 @@ let package = Package(
   ],
   products: [.library(name: "Pure", targets: ["Pure"])],
   dependencies: [
-    .package(name: "Quick", url: "https://github.com/Quick/Quick.git", .branch("quickobjcruntime-umbrella-header")),
-    .package(url: "https://github.com/Quick/Nimble.git", .upToNextMajor(from: "8.0.0")),
+    .package(url: "https://github.com/Quick/Quick.git", .upToNextMajor(from: "4.0.0")),
+    .package(url: "https://github.com/Quick/Nimble.git", .upToNextMajor(from: "9.2.0")),
   ],
   targets: [
     .target(name: "Pure", dependencies: []),
diff --git a/Sources/Pure/ConfiguratorModule.swift b/Sources/Pure/ConfiguratorModule.swift
index 38679f0..1c70c02 100644
--- a/Sources/Pure/ConfiguratorModule.swift
+++ b/Sources/Pure/ConfiguratorModule.swift
@@ -1,5 +1,5 @@
 /// A module that can be configurated with an existing instance.
-public protocol ConfiguratorModule: class, Module {
+public protocol ConfiguratorModule: AnyObject, Module {
 
   /// A configurator for `Self`.
   associatedtype Configurator = Pure.Configurator<Self>
diff --git a/Tests/PureTests/PureSpec.swift b/Tests/PureTests/PureSpec.swift
index 2ec91ad..1f4de48 100644
--- a/Tests/PureTests/PureSpec.swift
+++ b/Tests/PureTests/PureSpec.swift
@@ -239,7 +239,7 @@ final class PureSpec: QuickSpec {
         let configurator = MyClass.Configurator(dependency: .init())
         for _ in 0..<100 {
           DispatchQueue.global().async {
-            _ = configurator.configure(MyClass(), payload: .init())
+            configurator.configure(MyClass(), payload: .init())
           }
         }