diff --git a/Package.resolved b/Package.resolved
index 5225cb5..bf14856 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -1,114 +1,123 @@
 {
-  "originHash" : "62d09cddc4ab84131cb5e2cef0a442b1197e705e7023b538a05462a3e113a8f4",
-  "pins" : [
+  "originHash": "aa8bf4913549d8243ca09d1b54c3e8f35f1e2da825e9f455e170f1887093dad8",
+  "pins": [
     {
-      "identity" : "combine-schedulers",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/combine-schedulers",
-      "state" : {
-        "revision" : "dcccb979a2183b8df3334237e3dc1ae2b4116a86",
-        "version" : "1.2.0"
+      "identity": "combine-schedulers",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/combine-schedulers",
+      "state": {
+        "revision": "dcccb979a2183b8df3334237e3dc1ae2b4116a86",
+        "version": "1.2.0"
       }
     },
     {
-      "identity" : "swift-clocks",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/swift-clocks",
-      "state" : {
-        "revision" : "72d749bf341b78851203066ab421869b783ec42a",
-        "version" : "1.1.0"
+      "identity": "swift-clocks",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-clocks",
+      "state": {
+        "revision": "72d749bf341b78851203066ab421869b783ec42a",
+        "version": "1.1.0"
       }
     },
     {
-      "identity" : "swift-collections",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-collections",
-      "state" : {
-        "revision" : "a0cb0954ecb21e4e31b0070e6ed5674e8556685a",
-        "version" : "1.6.0"
+      "identity": "swift-collections",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/apple/swift-collections",
+      "state": {
+        "revision": "a0cb0954ecb21e4e31b0070e6ed5674e8556685a",
+        "version": "1.6.0"
       }
     },
     {
-      "identity" : "swift-concurrency-extras",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/swift-concurrency-extras",
-      "state" : {
-        "revision" : "a90e2e40a7a840a853dd29e57cbef5dbb72c9d5b",
-        "version" : "1.4.0"
+      "identity": "swift-concurrency-extras",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-concurrency-extras",
+      "state": {
+        "revision": "a90e2e40a7a840a853dd29e57cbef5dbb72c9d5b",
+        "version": "1.4.0"
       }
     },
     {
-      "identity" : "swift-custom-dump",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/swift-custom-dump",
-      "state" : {
-        "revision" : "b9b59eb58c946236d6f16305c576ad194c36444e",
-        "version" : "1.6.0"
+      "identity": "swift-custom-dump",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-custom-dump",
+      "state": {
+        "revision": "b9b59eb58c946236d6f16305c576ad194c36444e",
+        "version": "1.6.0"
       }
     },
     {
-      "identity" : "swift-dependencies",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/swift-dependencies",
-      "state" : {
-        "revision" : "f80552807ec92f72fe3fe4543d71879182b0bfd5",
-        "version" : "1.13.0"
+      "identity": "swift-dependencies",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-dependencies",
+      "state": {
+        "revision": "f80552807ec92f72fe3fe4543d71879182b0bfd5",
+        "version": "1.13.0"
       }
     },
     {
-      "identity" : "swift-docc-plugin",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/swiftlang/swift-docc-plugin",
-      "state" : {
-        "revision" : "647c708be89f834fa6a6d4945442793a77ddf5b6",
-        "version" : "1.5.0"
+      "identity": "swift-docc-plugin",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/swiftlang/swift-docc-plugin",
+      "state": {
+        "revision": "647c708be89f834fa6a6d4945442793a77ddf5b6",
+        "version": "1.5.0"
       }
     },
     {
-      "identity" : "swift-docc-symbolkit",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/swiftlang/swift-docc-symbolkit",
-      "state" : {
-        "revision" : "b45d1f2ed151d057b54504d653e0da5552844e34",
-        "version" : "1.0.0"
+      "identity": "swift-docc-symbolkit",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/swiftlang/swift-docc-symbolkit",
+      "state": {
+        "revision": "b45d1f2ed151d057b54504d653e0da5552844e34",
+        "version": "1.0.0"
       }
     },
     {
-      "identity" : "swift-identified-collections",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/swift-identified-collections",
-      "state" : {
-        "revision" : "322d9ffeeba85c9f7c4984b39422ec7cc3c56597",
-        "version" : "1.1.1"
+      "identity": "swift-identified-collections",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-identified-collections",
+      "state": {
+        "revision": "322d9ffeeba85c9f7c4984b39422ec7cc3c56597",
+        "version": "1.1.1"
       }
     },
     {
-      "identity" : "swift-perception",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/swift-perception",
-      "state" : {
-        "revision" : "25ac73741c3436605d61eceb5207e896973918e7",
-        "version" : "2.0.10"
+      "identity": "swift-issue-reporting",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-issue-reporting",
+      "state": {
+        "revision": "71c7c9a761d1ca6ed4ccb6ced040fe1c1a39e8e7",
+        "version": "2.1.0"
       }
     },
     {
-      "identity" : "swift-syntax",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/swiftlang/swift-syntax",
-      "state" : {
-        "revision" : "4799286537280063c85a32f09884cfbca301b1a1",
-        "version" : "602.0.0"
+      "identity": "swift-perception",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/swift-perception",
+      "state": {
+        "revision": "25ac73741c3436605d61eceb5207e896973918e7",
+        "version": "2.0.10"
       }
     },
     {
-      "identity" : "xctest-dynamic-overlay",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/pointfreeco/xctest-dynamic-overlay",
-      "state" : {
-        "revision" : "cb281f343fd953280336dcbd3822cdf47c182f5b",
-        "version" : "1.10.0"
+      "identity": "swift-syntax",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/swiftlang/swift-syntax",
+      "state": {
+        "revision": "4799286537280063c85a32f09884cfbca301b1a1",
+        "version": "602.0.0"
+      }
+    },
+    {
+      "identity": "xctest-dynamic-overlay",
+      "kind": "remoteSourceControl",
+      "location": "https://github.com/pointfreeco/xctest-dynamic-overlay",
+      "state": {
+        "revision": "7bbd97af585672a3dcdf6575ad37b339ad41b579",
+        "version": "1.13.0"
       }
     }
   ],
-  "version" : 3
+  "version": 3
 }
diff --git a/Package.swift b/Package.swift
index c2b8cc7..b79a52e 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 6.1
+// swift-tools-version: 6.4
 
 import Foundation
 import PackageDescription
@@ -6,10 +6,10 @@ import PackageDescription
 let package = Package(
   name: "swift-sharing",
   platforms: [
-    .iOS(.v13),
-    .macOS(.v10_15),
-    .tvOS(.v13),
-    .watchOS(.v6),
+    .iOS(.v15),
+    .macOS(.v12),
+    .tvOS(.v15),
+    .watchOS(.v9),
   ],
   products: [
     .library(
@@ -38,8 +38,8 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/swift-custom-dump", from: "1.0.0"),
     .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.5.1"),
     .package(url: "https://github.com/pointfreeco/swift-identified-collections", from: "1.0.0"),
+    .package(url: "https://github.com/pointfreeco/swift-issue-reporting", from: "2.1.0"),
     .package(url: "https://github.com/pointfreeco/swift-perception", "1.4.1"..<"3.0.0"),
-    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.4.3"),
     .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.0.0"),
   ],
   targets: [
@@ -71,7 +71,7 @@ let package = Package(
             traits: ["IdentifiedCollections"]
           )
         ),
-        .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
+        .product(name: "IssueReporting", package: "swift-issue-reporting"),
         .product(name: "PerceptionCore", package: "swift-perception"),
       ],
       resources: [
diff --git a/Package@swift-5.9.swift b/Package@swift-5.9.swift
index e8139b5..9e2443f 100644
--- a/Package@swift-5.9.swift
+++ b/Package@swift-5.9.swift
@@ -22,7 +22,7 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.5.1"),
     .package(url: "https://github.com/pointfreeco/swift-identified-collections", from: "1.0.0"),
     .package(url: "https://github.com/pointfreeco/swift-perception", "1.4.1"..<"3.0.0"),
-    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.4.3"),
+    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.13.0"),
     .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.0.0"),
   ],
   targets: [
diff --git a/Package@swift-6.0.swift b/Package@swift-6.0.swift
index a2c79b0..ccadc61 100644
--- a/Package@swift-6.0.swift
+++ b/Package@swift-6.0.swift
@@ -23,7 +23,7 @@ let package = Package(
     .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.5.1"),
     .package(url: "https://github.com/pointfreeco/swift-identified-collections", from: "1.0.0"),
     .package(url: "https://github.com/pointfreeco/swift-perception", "1.4.1"..<"3.0.0"),
-    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.4.3"),
+    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.13.0"),
     .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.0.0"),
   ],
   targets: [
diff --git a/Package@swift-6.1.swift b/Package@swift-6.1.swift
new file mode 100644
index 0000000..949739f
--- /dev/null
+++ b/Package@swift-6.1.swift
@@ -0,0 +1,134 @@
+// swift-tools-version: 6.1
+
+import Foundation
+import PackageDescription
+
+let package = Package(
+  name: "swift-sharing",
+  platforms: [
+    .iOS(.v13),
+    .macOS(.v10_15),
+    .tvOS(.v13),
+    .watchOS(.v6),
+  ],
+  products: [
+    .library(
+      name: "Sharing",
+      targets: ["Sharing"]
+    )
+  ],
+  traits: [
+    .trait(
+      name: "CasePaths",
+      description: "Derive Shared cases from Shared enums using CasePaths"
+    ),
+    .trait(
+      name: "CustomDump",
+      description: "Pretty-print and diff Sharing's data types using CustomDump"
+    ),
+    .trait(
+      name: "IdentifiedCollections",
+      description: "Derive Shared elements from Shared collections using IdentifiedCollections"
+    ),
+  ],
+  dependencies: [
+    .package(url: "https://github.com/pointfreeco/combine-schedulers", from: "1.0.0"),
+    .package(url: "https://github.com/pointfreeco/swift-case-paths", from: "1.7.3"),
+    .package(url: "https://github.com/pointfreeco/swift-concurrency-extras", from: "1.3.0"),
+    .package(url: "https://github.com/pointfreeco/swift-custom-dump", from: "1.0.0"),
+    .package(url: "https://github.com/pointfreeco/swift-dependencies", from: "1.5.1"),
+    .package(url: "https://github.com/pointfreeco/swift-identified-collections", from: "1.0.0"),
+    .package(url: "https://github.com/pointfreeco/swift-perception", "1.4.1"..<"3.0.0"),
+    .package(url: "https://github.com/pointfreeco/xctest-dynamic-overlay", from: "1.13.0"),
+    .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.0.0"),
+  ],
+  targets: [
+    .target(
+      name: "Sharing",
+      dependencies: [
+        "Sharing1",
+        "Sharing2",
+        .product(
+          name: "CasePaths",
+          package: "swift-case-paths",
+          condition: .when(
+            traits: ["CasePaths"]
+          )
+        ),
+        .product(name: "ConcurrencyExtras", package: "swift-concurrency-extras"),
+        .product(
+          name: "CustomDump",
+          package: "swift-custom-dump",
+          condition: .when(
+            traits: ["CustomDump"]
+          )
+        ),
+        .product(name: "Dependencies", package: "swift-dependencies"),
+        .product(
+          name: "IdentifiedCollections",
+          package: "swift-identified-collections",
+          condition: .when(
+            traits: ["IdentifiedCollections"]
+          )
+        ),
+        .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
+        .product(name: "PerceptionCore", package: "swift-perception"),
+      ],
+      resources: [
+        .process("PrivacyInfo.xcprivacy")
+      ]
+    ),
+    .testTarget(
+      name: "SharingTests",
+      dependencies: [
+        "Sharing",
+        .product(
+          name: "CasePaths",
+          package: "swift-case-paths",
+          condition: .when(
+            traits: ["CasePaths"]
+          )
+        ),
+        .product(name: "CombineSchedulers", package: "combine-schedulers"),
+        .product(name: "CustomDump", package: "swift-custom-dump"),
+        .product(name: "DependenciesTestSupport", package: "swift-dependencies"),
+      ],
+      exclude: ["Sharing.xctestplan"]
+    ),
+    .target(
+      name: "Sharing1",
+      path: "Sources/VersionMarkerModules/Sharing1"
+    ),
+    .target(
+      name: "Sharing2",
+      path: "Sources/VersionMarkerModules/Sharing2"
+    ),
+  ],
+  swiftLanguageModes: [.v6]
+)
+
+let enableAllTraits = ProcessInfo.processInfo.environment["SPI_GENERATE_DOCS"] != nil
+package.traits.insert(
+  .default(
+    enabledTraits: Set(
+      enableAllTraits
+        ? package.traits.map(\.name)
+        : [
+          "CustomDump",
+          "IdentifiedCollections",
+        ]
+    )
+  )
+)
+
+for target in package.targets {
+  target.swiftSettings = target.swiftSettings ?? []
+  target.swiftSettings?.append(contentsOf: [
+    .enableUpcomingFeature("ExistentialAny"),
+    .enableUpcomingFeature("ImmutableWeakCaptures"),
+    .enableUpcomingFeature("InferIsolatedConformances"),
+    .enableUpcomingFeature("InternalImportsByDefault"),
+    .enableUpcomingFeature("MemberImportVisibility"),
+    .enableUpcomingFeature("NonisolatedNonsendingByDefault"),
+  ])
+}