diff --git a/Samples/ObjC/SignInSample/Podfile b/Samples/ObjC/SignInSample/Podfile
index 52e6c140..4f9e2cf2 100644
--- a/Samples/ObjC/SignInSample/Podfile
+++ b/Samples/ObjC/SignInSample/Podfile
@@ -5,3 +5,17 @@ target 'SampleForPod' do
   pod 'GoogleSignIn', :path => '../../../', :testspecs => ['unit']
   project 'SignInSampleForPod.xcodeproj'
 end
+
+post_install do |installer|
+  # Xcode 27 refuses to build a target whose deployment target is below iOS 15.0.
+  # Several transitive pods still declare lower floors in their own podspecs, so
+  # raise the generated Pods project targets to match this sample's own minimum.
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      ios = config.build_settings['IPHONEOS_DEPLOYMENT_TARGET']
+      if ios && Gem::Version.new(ios) < Gem::Version.new('15.0')
+        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '15.0'
+      end
+    end
+  end
+end
diff --git a/Samples/Swift/AppAttestExample/Podfile b/Samples/Swift/AppAttestExample/Podfile
index 9e344324..5e1eb379 100644
--- a/Samples/Swift/AppAttestExample/Podfile
+++ b/Samples/Swift/AppAttestExample/Podfile
@@ -10,3 +10,17 @@ target 'AppAttestExampleForPod' do
   pod 'AppCheckCore'
   platform :ios, '15.0'
 end
+
+post_install do |installer|
+  # Xcode 27 refuses to build a target whose deployment target is below iOS 15.0.
+  # Several transitive pods still declare lower floors in their own podspecs, so
+  # raise the generated Pods project targets to match this sample's own minimum.
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      ios = config.build_settings['IPHONEOS_DEPLOYMENT_TARGET']
+      if ios && Gem::Version.new(ios) < Gem::Version.new('15.0')
+        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '15.0'
+      end
+    end
+  end
+end
diff --git a/Samples/Swift/DaysUntilBirthday/Podfile b/Samples/Swift/DaysUntilBirthday/Podfile
index b661e932..ee203945 100644
--- a/Samples/Swift/DaysUntilBirthday/Podfile
+++ b/Samples/Swift/DaysUntilBirthday/Podfile
@@ -11,3 +11,22 @@ end
 target 'DaysUntilBirthdayForPod (macOS)' do
   platform :osx, '12.0'
 end
+
+post_install do |installer|
+  # Xcode 27 refuses to build a target whose deployment target is below iOS 15.0
+  # or macOS 12.0. Several transitive pods still declare lower floors in their
+  # own podspecs, so raise the generated Pods project targets to match this
+  # sample's own minimums.
+  installer.pods_project.targets.each do |target|
+    target.build_configurations.each do |config|
+      ios = config.build_settings['IPHONEOS_DEPLOYMENT_TARGET']
+      if ios && Gem::Version.new(ios) < Gem::Version.new('15.0')
+        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '15.0'
+      end
+      macos = config.build_settings['MACOSX_DEPLOYMENT_TARGET']
+      if macos && Gem::Version.new(macos) < Gem::Version.new('12.0')
+        config.build_settings['MACOSX_DEPLOYMENT_TARGET'] = '12.0'
+      end
+    end
+  end
+end