diff --git a/.github/workflows/abtesting.yml b/.github/workflows/abtesting.yml
index 4b01f6870..3f9489211 100644
--- a/.github/workflows/abtesting.yml
+++ b/.github/workflows/abtesting.yml
@@ -40,13 +40,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         os: [iOS, tvOS, macOS, watchOS, catalyst]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
           - os: iOS
             # Test runs locally but fails in CI with:
             # (Underlying Error: lstat of
diff --git a/.github/workflows/analytics.yml b/.github/workflows/analytics.yml
index cf1eeb00d..ef91efdcf 100644
--- a/.github/workflows/analytics.yml
+++ b/.github/workflows/analytics.yml
@@ -39,12 +39,14 @@ jobs:
         # TODO: Re-enable when ODM2 catalyst support is investigated
         # os: [iOS, catalyst, tvOS, macOS]
         os: [iOS, tvOS, macOS]
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
           - os: iOS
             test: true
           # TODO: Re-enable when ODM2 catalyst support is investigated
diff --git a/.github/workflows/authentication.yml b/.github/workflows/authentication.yml
index 84e2a79ab..f09e1391e 100644
--- a/.github/workflows/authentication.yml
+++ b/.github/workflows/authentication.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       OS: iOS
       SETUP: authentication
diff --git a/.github/workflows/config.yml b/.github/workflows/config.yml
index cdb3028b5..96f8c9a22 100644
--- a/.github/workflows/config.yml
+++ b/.github/workflows/config.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       OS: iOS
       DIR: config
diff --git a/.github/workflows/crashlytics.yml b/.github/workflows/crashlytics.yml
index 5fa9902d4..28f89a8ac 100644
--- a/.github/workflows/crashlytics.yml
+++ b/.github/workflows/crashlytics.yml
@@ -36,13 +36,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         os: [iOS, tvOS, macOS, watchOS]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
           - os: iOS
             test: false # flaky
           - os: tvOS
diff --git a/.github/workflows/database.yml b/.github/workflows/database.yml
index 95eb00272..0424bc338 100644
--- a/.github/workflows/database.yml
+++ b/.github/workflows/database.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       OS: iOS
       SPM: true
@@ -71,13 +73,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         os: [iOS, tvOS, macOS]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
           - os: iOS
             test: false
           - os: tvOS
diff --git a/.github/workflows/firebaseai.yml b/.github/workflows/firebaseai.yml
index 0118dc46e..1f6ae5e55 100644
--- a/.github/workflows/firebaseai.yml
+++ b/.github/workflows/firebaseai.yml
@@ -27,12 +27,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SETUP: firebaseai
       SPM: true
diff --git a/.github/workflows/firestore.yml b/.github/workflows/firestore.yml
index 13ed7aff3..d23ba98ed 100644
--- a/.github/workflows/firestore.yml
+++ b/.github/workflows/firestore.yml
@@ -33,18 +33,20 @@ jobs:
   spm:
     name: spm (Xcode ${{ matrix.xcode }} - iOS)
     runs-on: ${{ matrix.runner }}
-    # TODO: Remove continue-on-error once firebase-ios-sdk 13.2.0 is released
+    # TODO: Remove 26.2 from continue-on-error once firebase-ios-sdk 13.2.0 is released
     # with the Xcode 26.2 package traits workaround (firebase/firebase-ios-sdk#16944).
     continue-on-error: ${{ matrix.xcode == '26.2' }}
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SPM: true
       OS: iOS
diff --git a/.github/workflows/functions.yml b/.github/workflows/functions.yml
index 5c894d3c1..d3f170c29 100644
--- a/.github/workflows/functions.yml
+++ b/.github/workflows/functions.yml
@@ -36,13 +36,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         os: [iOS, tvOS, macOS]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SETUP: functions
       SPM: true
diff --git a/.github/workflows/inappmessaging.yml b/.github/workflows/inappmessaging.yml
index 214414132..3584da1d8 100644
--- a/.github/workflows/inappmessaging.yml
+++ b/.github/workflows/inappmessaging.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SPM: true
       DIR: inappmessaging
diff --git a/.github/workflows/installations.yml b/.github/workflows/installations.yml
index 6c713e9d4..783ea5340 100644
--- a/.github/workflows/installations.yml
+++ b/.github/workflows/installations.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SPM: true
       OS: iOS
diff --git a/.github/workflows/messaging.yml b/.github/workflows/messaging.yml
index 3cea449eb..738190d03 100644
--- a/.github/workflows/messaging.yml
+++ b/.github/workflows/messaging.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SPM: true
       OS: iOS
diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index c83de0392..5402f8f95 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -36,12 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SPM: true
       OS: iOS
@@ -71,13 +73,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         os: [iOS, tvOS]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
           - os: iOS
             test: false
             scheme: PerformanceExample (iOS)
diff --git a/.github/workflows/storage.yml b/.github/workflows/storage.yml
index 13a46964a..9d169351d 100644
--- a/.github/workflows/storage.yml
+++ b/.github/workflows/storage.yml
@@ -36,13 +36,15 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        xcode: ["26.2", "26.4"]
+        xcode: ["26.2", "26.4", "27.1"]
         os: [iOS, tvOS, macOS]
         include:
           - xcode: "26.2"
             runner: macos-15
           - xcode: "26.4"
             runner: macos-26
+          - xcode: "27.1"
+            runner: xcode-27
     env:
       SETUP: storage
       SPM: true