diff --git a/.github/workflows/firebaseai.yml b/.github/workflows/firebaseai.yml
index eb3357cdb..65378ba39 100644
--- a/.github/workflows/firebaseai.yml
+++ b/.github/workflows/firebaseai.yml
@@ -1,5 +1,8 @@
 name: firebaseai
 
+permissions:
+  contents: read
+
 on:
   pull_request:
     paths:
@@ -19,20 +22,24 @@ env:
 
 jobs:
   spm:
-    name: spm (Xcode ${{ matrix.xcode }} - ${{ matrix.os }})
-    runs-on: macOS-15
+    name: spm (Xcode ${{ matrix.xcode }} - ${{ matrix.platform }})
     strategy:
       matrix:
-        xcode: ["16.4"]
-        os: [iOS]
         include:
-          - os: iOS
+          - os: macos-15
+            xcode: "16.4"
+            platform: iOS
             device: iPhone 16
+          - os: macos-26
+            xcode: "26.0"
+            platform: iOS
+            device: iPhone 16e
+    runs-on: ${{ matrix.os }}
     env:
       SETUP: firebaseai
       SPM: true
       DIR: firebaseai
-      OS: ${{ matrix.os }}
+      OS: ${{ matrix.platform }}
       DEVICE: ${{ matrix.device }}
       TEST: false
       XCODE_VERSION: ${{ matrix.xcode }}
@@ -45,5 +52,5 @@ jobs:
           gem install xcpretty
       - name: Placeholder GoogleService-Info.plist good enough for build only testing.
         run: cp ./mock-GoogleService-Info.plist ./firebaseai/GoogleService-Info.plist
-      - name: Build and Test SwiftUI (${{ matrix.os }})
+      - name: Build and Test SwiftUI (${{ matrix.platform }})
         run: ./scripts/test.sh
diff --git a/scripts/test.sh b/scripts/test.sh
index bbc78fb45..283035efa 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -20,12 +20,19 @@
 
 set -euo pipefail
 
-if [ -d "/Applications/Xcode_16.4.app" ]; then
-    xcode_version="16.4"
-    iphone_version="16"
+xcode_version=$(xcodebuild -version | grep Xcode)
+xcode_version="${xcode_version/Xcode /}"
+xcode_major="${xcode_version/.*/}"
+
+if [[ "$xcode_major" -ge 26 ]]; then
+  iphone_version="17"
+elif [[ "$xcode_major" -ge 16 ]]; then
+  iphone_version="16"
+elif [[ "$xcode_major" -ge 15 ]]; then
+  iphone_version="15"
 else
-    xcode_version="15.3"
-    iphone_version="15"
+  echo "Unsupported Xcode version $xcode_version; exiting." 1>&2
+  exit 1
 fi
 
 # Set default parameters