diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f802dc0..99d8344 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -60,24 +60,6 @@ jobs:
       - name: Build
         run: swift build --swift-sdk wasm32-unknown-wasi -Xlinker -z -Xlinker stack-size=$((1024 * 1024))
 
-  windows:
-    name: Windows
-    strategy:
-      matrix:
-        os: [windows-latest]
-        config: ['debug', 'release']
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: compnerd/gha-setup-swift@main
-        with:
-          branch: swift-5.10-release
-          tag: 5.10-RELEASE
-      - uses: actions/checkout@v4
-      - name: Build All Configurations
-        run: swift build -c ${{ matrix.config }}
-      - name: Run tests (debug only)
-        run: swift test
-
   android:
     name: Android (Swift 6.0.2)
     runs-on: ubuntu-22.04
diff --git a/Package.swift b/Package.swift
index 5c2d702..af27ad9 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 5.9
+// swift-tools-version: 6.0
 
 import PackageDescription
 
@@ -25,9 +25,6 @@ let package = Package(
       dependencies: [
         .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
         .product(name: "XCTestDynamicOverlay", package: "xctest-dynamic-overlay"),
-      ],
-      swiftSettings: [
-        .enableExperimentalFeature("StrictConcurrency")
       ]
     ),
     .testTarget(
diff --git a/Package@swift-6.0.swift b/Package@swift-5.9.swift
similarity index 86%
rename from Package@swift-6.0.swift
rename to Package@swift-5.9.swift
index af27ad9..5c2d702 100644
--- a/Package@swift-6.0.swift
+++ b/Package@swift-5.9.swift
@@ -1,4 +1,4 @@
-// swift-tools-version: 6.0
+// swift-tools-version: 5.9
 
 import PackageDescription
 
@@ -25,6 +25,9 @@ let package = Package(
       dependencies: [
         .product(name: "IssueReporting", package: "xctest-dynamic-overlay"),
         .product(name: "XCTestDynamicOverlay", package: "xctest-dynamic-overlay"),
+      ],
+      swiftSettings: [
+        .enableExperimentalFeature("StrictConcurrency")
       ]
     ),
     .testTarget(