diff --git a/.github/workflows/ios_ci.yml b/.github/workflows/ios_ci.yml
--- a/.github/workflows/ios_ci.yml
+++ b/.github/workflows/ios_ci.yml
@@ -10,10 +10,13 @@
       - 'keyserver/**'
       - 'desktop/**'
 
+env:
+  DEVELOPER_DIR: /Applications/Xcode_15.0.app/Contents/Developer
+
 jobs:
   build:
     name: Build and archive iOS app
-    runs-on: macos-12
+    runs-on: macos-13
 
     steps:
       - name: Checkout
diff --git a/.github/workflows/ios_release.yml b/.github/workflows/ios_release.yml
--- a/.github/workflows/ios_release.yml
+++ b/.github/workflows/ios_release.yml
@@ -5,10 +5,13 @@
     tags:
       - mobile-**
 
+env:
+  DEVELOPER_DIR: /Applications/Xcode_15.0.app/Contents/Developer
+
 jobs:
   build:
     name: Build, archive, and upload iOS app
-    runs-on: macos-12
+    runs-on: macos-13
 
     steps:
       - name: Checkout