diff --git a/.github/workflows/database.yml b/.github/workflows/database.yml
index 9a213260520..6a99cbf9630 100644
--- a/.github/workflows/database.yml
+++ b/.github/workflows/database.yml
@@ -63,6 +63,13 @@ jobs:
       run: gem install xcpretty
     - name: Xcode
       run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
+    - name: Install simulators in case they are missing.
+      uses: nick-fields/retry@ce71cc2ab81d554ebbe88c79ab5975992d79ba08 # v3
+      with:
+        timeout_minutes: 15
+        max_attempts: 5
+        retry_wait_seconds: 120
+        command: sudo xcodebuild -downloadPlatform iOS
     - name: IntegrationTest
       # Only iOS to mitigate flakes.
       run: scripts/third_party/travis/retry.sh scripts/build.sh Database iOS integration
diff --git a/.github/workflows/mlmodeldownloader.yml b/.github/workflows/mlmodeldownloader.yml
index 9d097b954e9..af78125520d 100644
--- a/.github/workflows/mlmodeldownloader.yml
+++ b/.github/workflows/mlmodeldownloader.yml
@@ -73,6 +73,13 @@ jobs:
       run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Setup Bundler
       run: scripts/setup_bundler.sh
+    - name: Install simulators in case they are missing.
+      uses: nick-fields/retry@ce71cc2ab81d554ebbe88c79ab5975992d79ba08 # v3
+      with:
+        timeout_minutes: 15
+        max_attempts: 5
+        retry_wait_seconds: 120
+        command: sudo xcodebuild -downloadPlatform iOS
     - name: Install GoogleService-Info.plist
       run: |
         mkdir FirebaseMLModelDownloader/Apps/Sample/Resources
diff --git a/.github/workflows/spectesting.yml b/.github/workflows/spectesting.yml
index 94b942e9f3f..06dc7ee24f7 100644
--- a/.github/workflows/spectesting.yml
+++ b/.github/workflows/spectesting.yml
@@ -47,7 +47,7 @@ jobs:
   specs_testing:
     needs: specs_checking
     if: ${{ needs.specs_checking.outputs.podspecs != '[]' }}
-    runs-on: macos-14
+    runs-on: macos-15
     strategy:
       fail-fast: false
       matrix: ${{fromJson(needs.specs_checking.outputs.matrix)}}
@@ -58,6 +58,8 @@ jobs:
       uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       with:
         fetch-depth: 0
+    - name: Xcode
+      run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
     - name: Init podspecs and source
       run: |
         mkdir specTestingLogs