diff --git a/.github/workflows/swiftui-auth.yml b/.github/workflows/swiftui-auth.yml
index b19fcba95d0..3905ff89df0 100644
--- a/.github/workflows/swiftui-auth.yml
+++ b/.github/workflows/swiftui-auth.yml
@@ -49,14 +49,14 @@ jobs:
         run: gem install xcpretty
         
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.4.app/Contents/Developer
         
       - name: Run FirebaseSwiftUI Package Unit Tests
         run: |
           set -o pipefail
           xcodebuild test \
             -scheme FirebaseUI-Package \
-            -destination 'platform=iOS Simulator,name=iPhone 17' \
+            -destination 'platform=iOS Simulator,OS=26.4,name=iPhone 17' \
             -enableCodeCoverage YES \
             -resultBundlePath FirebaseSwiftUIPackageTests.xcresult | tee FirebaseSwiftUIPackageTests.log | xcpretty --test --color --simple
             
@@ -105,7 +105,7 @@ jobs:
         run: gem install xcpretty
         
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.4.app/Contents/Developer
         
       - name: Build for Integration Tests
         run: |
@@ -113,7 +113,7 @@ jobs:
           set -o pipefail
           xcodebuild build-for-testing \
             -scheme FirebaseSwiftUIExampleTests \
-            -destination 'platform=iOS Simulator,name=iPhone 17' \
+            -destination 'platform=iOS Simulator,OS=26.4,name=iPhone 17' \
             -enableCodeCoverage YES | xcpretty --color --simple
             
       - name: Run Integration Tests
@@ -122,7 +122,7 @@ jobs:
           set -o pipefail
           xcodebuild test-without-building \
             -scheme FirebaseSwiftUIExampleTests \
-            -destination 'platform=iOS Simulator,name=iPhone 17' \
+            -destination 'platform=iOS Simulator,OS=26.4,name=iPhone 17' \
             -enableCodeCoverage YES \
             -resultBundlePath FirebaseSwiftUIExampleTests.xcresult | tee FirebaseSwiftUIExampleTests.log | xcpretty --test --color --simple
             
@@ -171,7 +171,7 @@ jobs:
         run: gem install xcpretty
         
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.4.app/Contents/Developer
         
       - name: Build for UI Tests
         run: |
@@ -179,7 +179,7 @@ jobs:
           set -o pipefail
           xcodebuild build-for-testing \
             -scheme FirebaseSwiftUIExampleUITests \
-            -destination 'platform=iOS Simulator,name=iPhone 17' \
+            -destination 'platform=iOS Simulator,OS=26.4,name=iPhone 17' \
             -enableCodeCoverage YES | xcpretty --color --simple
             
       - name: Run UI Tests
@@ -188,7 +188,7 @@ jobs:
           set -o pipefail
           xcodebuild test-without-building \
             -scheme FirebaseSwiftUIExampleUITests \
-            -destination 'platform=iOS Simulator,name=iPhone 17' \
+            -destination 'platform=iOS Simulator,OS=26.4,name=iPhone 17' \
             -parallel-testing-enabled NO \
             -enableCodeCoverage YES \
             -resultBundlePath FirebaseSwiftUIExampleUITests.xcresult | tee FirebaseSwiftUIExampleUITests.log | xcpretty --test --color --simple