diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db3da5c..e99a92c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,10 +13,10 @@ concurrency:
 jobs:
   unit-tests:
     name: Unit tests
-    runs-on: macos-15
+    runs-on: xcode-27
     env:
       SCHEME: Normal
-      SIMULATOR: iPhone 16 Pro
+      SIMULATOR: iPhone 17
     steps:
       - uses: actions/checkout@v4
 
diff --git a/.github/workflows/ui-tests.yml b/.github/workflows/ui-tests.yml
index d533411..817069b 100644
--- a/.github/workflows/ui-tests.yml
+++ b/.github/workflows/ui-tests.yml
@@ -15,11 +15,11 @@ concurrency:
 jobs:
   ui-tests:
     name: UI tests
-    runs-on: macos-15
+    runs-on: xcode-27
     timeout-minutes: 30
     env:
       SCHEME: Normal
-      SIMULATOR: iPhone 16 Pro
+      SIMULATOR: iPhone 17
       ONLY: ${{ inputs.only }}
     steps:
       - uses: actions/checkout@v4
diff --git a/.gitignore b/.gitignore
index 3d3b875..d82a9bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,5 @@ build/
 DerivedData/
 
 
-.DS_Store
\ No newline at end of file
+.DS_Store
+Normal.xcodeproj/xcshareddata/xcodecloud/*
diff --git a/Shared/TimedUnblockActivityAttributes.swift b/Shared/TimedUnblockActivityAttributes.swift
index 99eb2b4..c080448 100644
--- a/Shared/TimedUnblockActivityAttributes.swift
+++ b/Shared/TimedUnblockActivityAttributes.swift
@@ -1,7 +1,7 @@
 import ActivityKit
 import Foundation
 
-struct TimedUnblockActivityAttributes: ActivityAttributes {
+nonisolated struct TimedUnblockActivityAttributes: ActivityAttributes {
     struct ContentState: Codable, Hashable {
         var endDate: Date
     }