diff --git a/.github/matrix.json b/.github/matrix.json
index d3a3d5c..507e128 100644
--- a/.github/matrix.json
+++ b/.github/matrix.json
@@ -1,16 +1,16 @@
 {
     "xcode_version": [
-        "15.2",
-        "15.4"
+        "16.4"
     ],
     "swift_version": [
-        "5.9",
-        "5.10"
+        "5.10",
+        "6.0",
+        "6.1"
     ],
     "platform": [
         "platform=macOS",
         "platform=macOS,variant=Mac Catalyst",
-        "platform=iOS Simulator,name=iPhone 15 Pro",
+        "platform=iOS Simulator,name=iPhone 16 Pro",
         "platform=tvOS Simulator,name=Apple TV 4K (3rd generation)"
     ]
 }
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index be6ca1d..f210a20 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -36,7 +36,7 @@ jobs:
   test-macos:
     name: Test
     needs: extract-matrix
-    runs-on: macOS-14
+    runs-on: macOS-15
     concurrency:
       group: ${{ github.head_ref }}-${{ github.workflow }}-${{ matrix.xcode }}-${{ matrix.destination }}
       cancel-in-progress: true
@@ -86,7 +86,7 @@ jobs:
   xcodebuild_result:
     name: Export xcodebuild test result
     needs: test-macos
-    runs-on: macOS-14
+    runs-on: macOS-15
     steps:
       - uses: actions/download-artifact@v6
         with:
diff --git a/Package.swift b/Package.swift
index 188586f..71eba91 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
@@ -58,16 +58,15 @@ if isDevelop {
 // MARK: - Upcoming feature flags for Swift 6
 package.targets.forEach {
     $0.swiftSettings = [
-        // .forwardTrailingClosures,
+        .forwardTrailingClosures,
         .existentialAny,
         .bareSlashRegexLiterals,
         .conciseMagicFile,
         .importObjcForwardDeclarations,
         .disableOutwardActorInference,
-        // TODO: enable when 5.9 dropped
-        // .deprecateApplicationMain,
-        // .isolatedDefaultValues,
-        // .globalConcurrency,
+        .deprecateApplicationMain,
+        .isolatedDefaultValues,
+        .globalConcurrency,
     ]
 }