diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 15bb550..7812ce3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,10 +36,10 @@ jobs:
           junit: result-swift-testing.xml
           coverage: .build/debug/codecov/KeyValueCoder.json
 
-  xcode_16_2:
+  xcode_26:
     runs-on: macos-15
     env:
-      DEVELOPER_DIR: /Applications/Xcode_16.2.app/Contents/Developer
+      DEVELOPER_DIR: /Applications/Xcode_26.0.app/Contents/Developer
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -50,10 +50,10 @@ jobs:
       - name: Test
         run: swift test --skip-build
 
-  xcode_15_4:
-    runs-on: macos-14
+  xcode_16_2:
+    runs-on: macos-15
     env:
-      DEVELOPER_DIR: /Applications/Xcode_15.4.app/Contents/Developer
+      DEVELOPER_DIR: /Applications/Xcode_16.2.app/Contents/Developer
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -64,10 +64,10 @@ jobs:
       - name: Test
         run: swift test --skip-build
 
-  xcode_15_2:
+  xcode_15_4:
     runs-on: macos-14
     env:
-      DEVELOPER_DIR: /Applications/Xcode_15.2.app/Contents/Developer
+      DEVELOPER_DIR: /Applications/Xcode_15.4.app/Contents/Developer
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -91,9 +91,9 @@ jobs:
       - name: Test
         run: swift test --skip-build
 
-  linux_swift_5_9:
+  linux_swift_6_0:
     runs-on: ubuntu-latest
-    container: swift:5.9
+    container: swift:6.0
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -104,9 +104,9 @@ jobs:
       - name: Test
         run: swift test --skip-build
 
-  linux_swift_6_0:
+  linux_swift_6_1:
     runs-on: ubuntu-latest
-    container: swift:6.0
+    container: swift:6.1.2
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -117,9 +117,9 @@ jobs:
       - name: Test
         run: swift test --skip-build
 
-  linux_swift_6_1:
+  linux_swift_6_2:
     runs-on: ubuntu-latest
-    container: swift:6.1.2
+    container: swiftlang/swift:nightly-6.2-noble
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/Package@swift-5.9.swift b/Package@swift-5.10.swift
similarity index 96%
rename from Package@swift-5.9.swift
rename to Package@swift-5.10.swift
index 43cdce7..b5ffc2d 100644
--- a/Package@swift-5.9.swift
+++ b/Package@swift-5.10.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:5.10
 import PackageDescription
 
 let package = Package(