diff --git a/.github/workflows/base_build.yaml b/.github/workflows/base_build.yaml
index 3ac7a9dae..3eed5a0a5 100644
--- a/.github/workflows/base_build.yaml
+++ b/.github/workflows/base_build.yaml
@@ -14,13 +14,13 @@ on:
 
 jobs:
   build:
-    runs-on: [macos-14]
+    runs-on: [macos-latest]
 
     steps:
       - name: Select Xcode
         uses: maxim-lobanov/setup-xcode@v1
         with:
-          xcode-version: 15.4.0
+          xcode-version: 16
 
       - name: Checkout
         uses: actions/checkout@v4
@@ -31,7 +31,7 @@ jobs:
         uses: sersoft-gmbh/xcodebuild-action@v3
         with:
           action: build
-          build-settings: ONLY_ACTIVE_ARCH=NO TEST_AFTER_BUILD=NO
+          build-settings: ONLY_ACTIVE_ARCH=NO TEST_AFTER_BUILD=NO SWIFT_VERSION=5.9
           configuration: Debug
           derived-data-path: "${{ github.workspace }}/SplitApp"
           destination: ${{ inputs.destination }}
diff --git a/.github/workflows/base_ut.yaml b/.github/workflows/base_ut.yaml
index 8aedeaae8..b71660d8a 100644
--- a/.github/workflows/base_ut.yaml
+++ b/.github/workflows/base_ut.yaml
@@ -13,13 +13,13 @@ on:
 
 jobs:
   test:
-    runs-on: [macos-14]
+    runs-on: [macos-latest]
 
     steps:
       - name: Select Xcode
         uses: maxim-lobanov/setup-xcode@v1
         with:
-          xcode-version: 15.4.0
+          xcode-version: 16
 
       - name: Checkout
         uses: actions/checkout@v4
@@ -30,7 +30,7 @@ jobs:
         uses: sersoft-gmbh/xcodebuild-action@v3
         with:
           action: test
-          build-settings: ONLY_ACTIVE_ARCH=NO
+          build-settings: ONLY_ACTIVE_ARCH=NO SWIFT_VERSION=5.9
           configuration: Debug
           derived-data-path: "${{github.workspace}}/SplitApp"
           destination: ${{ inputs.destination }}
diff --git a/.github/workflows/sonar.yml b/.github/workflows/sonar.yml
index 95a9fbc4f..716383bae 100644
--- a/.github/workflows/sonar.yml
+++ b/.github/workflows/sonar.yml
@@ -13,7 +13,7 @@ concurrency:
 jobs:
   build-and-collect-coverage:
     name: Build & Collect Coverage
-    runs-on: macos-15
+    runs-on: macos-latest
     timeout-minutes: 15
     steps:
       - name: Checkout
@@ -28,7 +28,7 @@ jobs:
             -project Split.xcodeproj \
             -scheme Split \
             -testPlan "SplitiOSFull" \
-            -destination 'platform=iOS Simulator,OS=18.4,name=iPhone 16' \
+            -destination 'platform=iOS Simulator,OS=18.4,name=iPhone 16 Pro Max' \
             -enableCodeCoverage YES \
             -resultBundlePath build/Logs/Test/TestResults.xcresult \
             -derivedDataPath build
diff --git a/.github/workflows/test_all.yaml b/.github/workflows/test_all.yaml
index 534026ada..0e454056f 100644
--- a/.github/workflows/test_all.yaml
+++ b/.github/workflows/test_all.yaml
@@ -36,4 +36,4 @@ jobs:
     uses: ./.github/workflows/base_ut.yaml
     with:
       test-plan: ${{ matrix.plan }}
-      destination: 'platform=iOS Simulator,OS=17.2,name=iPhone 15'
+      destination: 'platform=iOS Simulator,OS=18.5,name=iPhone 16 Pro Max'
diff --git a/.github/workflows/xcframework.yaml b/.github/workflows/xcframework.yaml
index b8076747c..f2457100e 100644
--- a/.github/workflows/xcframework.yaml
+++ b/.github/workflows/xcframework.yaml
@@ -14,7 +14,7 @@ jobs:
     - name: Select Xcode
       uses: maxim-lobanov/setup-xcode@v1
       with:
-        xcode-version: 15.1.0
+        xcode-version: 16
 
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2