diff --git a/.github/workflows/cron-checks.yml b/.github/workflows/cron-checks.yml
index 3ab748d2..fe766e8e 100644
--- a/.github/workflows/cron-checks.yml
+++ b/.github/workflows/cron-checks.yml
@@ -46,13 +46,13 @@ jobs:
             os: macos-15
             device: "iPhone 16 Pro"
             setup_runtime: false
-          - ios: 17.4
+          - ios: 17.5
             xcode: 15.4
-            os: macos-14
+            os: macos-15
             device: "iPhone 14 Pro"
             setup_runtime: false
           - ios: 16.4
-            xcode: 15.3
+            xcode: 15.3 # fails on 15.4
             os: macos-14
             device: "iPhone 14 Pro"
             setup_runtime: true
@@ -149,10 +149,10 @@ jobs:
 
   build-xcode15:
     name: Build SDKs (Xcode 15.0)
-    runs-on: macos-13
+    runs-on: macos-15
     if: ${{ github.event_name != 'push' && github.event.inputs.snapshots != 'true' }}
     env:
-      XCODE_VERSION: "15.0.1"
+      XCODE_VERSION: "15.4"
     steps:
     - name: Connect Bot
       uses: webfactory/ssh-agent@v0.7.0
@@ -175,9 +175,9 @@ jobs:
 
   automated-code-review:
     name: Automated Code Review
-    runs-on: macos-13
+    runs-on: macos-15
     env:
-      XCODE_VERSION: "15.0.1"
+      XCODE_VERSION: "15.4"
     steps:
     - uses: actions/checkout@v4.1.1
     - uses: ./.github/actions/bootstrap
diff --git a/.github/workflows/release-start.yml b/.github/workflows/release-start.yml
index 13af12f4..e195127c 100644
--- a/.github/workflows/release-start.yml
+++ b/.github/workflows/release-start.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   test-release:
     name: Start new release
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - name: Connect Bot
         uses: webfactory/ssh-agent@v0.7.0
@@ -32,4 +32,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.CI_BOT_GITHUB_TOKEN }}
           MATCH_PASSWORD: ${{ secrets.MATCH_PASSWORD }}
           APPSTORE_API_KEY: ${{ secrets.APPSTORE_API_KEY }}
-          XCODE_VERSION: "15.0.1"
+          XCODE_VERSION: "15.4"
diff --git a/.github/workflows/smoke-checks.yml b/.github/workflows/smoke-checks.yml
index 199f55bf..511f86ff 100644
--- a/.github/workflows/smoke-checks.yml
+++ b/.github/workflows/smoke-checks.yml
@@ -46,9 +46,9 @@ jobs:
 
   automated-code-review:
     name: Automated Code Review
-    runs-on: macos-13
+    runs-on: macos-15
     env:
-      XCODE_VERSION: "15.0.1"
+      XCODE_VERSION: "15.4"
     if: ${{ github.event_name != 'push' && github.event.inputs.snapshots != 'true' }}
     steps:
     - uses: actions/checkout@v4.1.1
@@ -65,10 +65,10 @@ jobs:
 
   build-xcode15:
     name: Build SDKs (Xcode 15.0)
-    runs-on: macos-13
+    runs-on: macos-15
     if: ${{ github.event_name != 'push' && github.event.inputs.snapshots != 'true' }}
     env:
-      XCODE_VERSION: "15.0.1"
+      XCODE_VERSION: "15.4"
     steps:
     - name: Connect Bot
       uses: webfactory/ssh-agent@v0.7.0