diff --git a/.github/workflows/messaging.yml b/.github/workflows/messaging.yml
index 24f6a7de304..d2f57632bfc 100644
--- a/.github/workflows/messaging.yml
+++ b/.github/workflows/messaging.yml
@@ -178,6 +178,8 @@ jobs:
       with:
         cache_key: sample${{ matrix.os }}
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
     - name: Install Secret GoogleService-Info.plist
@@ -186,8 +188,6 @@ jobs:
           FirebaseMessaging/Apps/Shared/GoogleService-Info.plist "$plist_secret"
     - name: Prereqs
       run: scripts/install_prereqs.sh MessagingSample iOS
-    - name: Xcode
-      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Build
       run: ([ -z $plist_secret ] || scripts/build.sh MessagingSample iOS)
 
diff --git a/.github/workflows/prerelease.yml b/.github/workflows/prerelease.yml
index de7187ddb9b..628dca33d25 100644
--- a/.github/workflows/prerelease.yml
+++ b/.github/workflows/prerelease.yml
@@ -35,6 +35,8 @@ jobs:
       uses: actions/checkout@v4
       with:
         fetch-depth: 0
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Generate matrix
       id: generate_matrix
       run: |
@@ -80,6 +82,7 @@ jobs:
         path: |
           *.podspec
           *.podspec.json
+
   buildup_SpecsTesting_repo_FirebaseCore:
     needs: specs_checking
     # Don't run on private repo unless it is a PR.
@@ -92,6 +95,8 @@ jobs:
       targeted_pod: FirebaseCore
     steps:
     - uses: actions/checkout@v4
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - uses: actions/download-artifact@v4.1.7
       with:
         name: firebase-ios-sdk
@@ -127,10 +132,17 @@ jobs:
       targeted_pod: ${{ matrix.podspec }}
     steps:
     - uses: actions/checkout@v4
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - uses: actions/download-artifact@v4.1.7
       with:
         name: firebase-ios-sdk
         path: ${{ env.local_sdk_repo_dir }}
+    # Addresses flaky pushes due to missing git config on runner.
+    - name: Set git config
+      run: |
+        git config --global user.email "google-oss-bot@example.com"
+        git config --global user.name "google-oss-bot"
     - name: Update SpecsTesting repo
       run: |
         [[ ${{ matrix.allowwarnings }} == true ]] && ALLOWWARNINGS=true
@@ -163,6 +175,8 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Update SpecsTesting repo setup
       run: |
          # Update/create a nightly tag to the head of the main branch.
@@ -207,6 +221,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       env:
         LEGACY: true
@@ -273,6 +289,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       env:
         LEGACY: true
@@ -314,6 +332,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh database prerelease_testing
     - name: Install Secret GoogleService-Info.plist
@@ -346,6 +366,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh firestore prerelease_testing
     - name: Install Secret GoogleService-Info.plist
@@ -380,6 +402,8 @@ jobs:
     # steps:
     # - uses: actions/checkout@v4
     # - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    # - name: Xcode
+    #   run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     # - name: Setup testing repo and quickstart
     #   run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh functions prerelease_testing
     # - name: install secret googleservice-info.plist
@@ -416,6 +440,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh inappmessaging prerelease_testing
     - name: install secret googleservice-info.plist
@@ -450,6 +476,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh messaging prerelease_testing
     - name: Install Secret GoogleService-Info.plist
@@ -482,6 +510,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh config prerelease_testing
     - name: Install Secret GoogleService-Info.plist
@@ -513,6 +543,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh storage prerelease_testing
     - name: Install Secret GoogleService-Info.plist
@@ -543,6 +575,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@354a1ad156761f5ee2b7b13fa8e09943a5e8d252 # v1
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup testing repo and quickstart
       run: BOT_TOKEN="${botaccess}" scripts/setup_quickstart.sh Performance prerelease_testing
     - name: Install Secret GoogleService-Info.plist
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3b28e2fb8ec..d29131a857e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -127,6 +127,11 @@ jobs:
       with:
         name: firebase-ios-sdk
         path: ${{ env.local_sdk_repo_dir }}
+    # Addresses flaky pushes due to missing git config on runner.
+    - name: Set git config
+      run: |
+        git config --global user.email "google-oss-bot@example.com"
+        git config --global user.name "google-oss-bot"
     - name: Update SpecsReleasing repo
       run: |
         [[ ${{ matrix.allowwarnings }} == true ]] && ALLOWWARNINGS=true
@@ -153,7 +158,7 @@ jobs:
       plist_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
       signin_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -221,7 +226,7 @@ jobs:
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -264,7 +269,7 @@ jobs:
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -298,7 +303,7 @@ jobs:
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -369,7 +374,7 @@ jobs:
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -405,7 +410,7 @@ jobs:
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -439,7 +444,7 @@ jobs:
       plist_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
       signin_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -472,7 +477,7 @@ jobs:
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
       LEGACY: true
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version
@@ -504,7 +509,7 @@ jobs:
       botaccess: ${{ secrets.RELEASE_TESTING_PAT }}
       testing_repo_dir: "/tmp/test/"
       testing_repo: "firebase-ios-sdk"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - name: Set Xcode version