diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e6b782ca..fd0e366e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,4 +47,6 @@ jobs:
         run: just install-gemstone
 
       - name: Unit Tests
-        run: just test
+        run: |
+          sudo xcode-select -s /Applications/Xcode_16_Release_Candidate.app
+          just test
diff --git a/justfile b/justfile
index 70692d49..75b32410 100644
--- a/justfile
+++ b/justfile
@@ -49,7 +49,7 @@ test:
     @set -o pipefail && xcodebuild -project Gem.xcodeproj \
     -scheme Gem \
     -sdk iphonesimulator \
-    -destination "platform=iOS Simulator,name=iPhone 15" \
+    -destination "platform=iOS Simulator,name=iPhone 16" \
     test | xcbeautify
 
 localize: