diff --git a/.cirrus.yml b/.cirrus.yml
index 5f7b08010..aa7ca48cb 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -1,10 +1,11 @@
 macos_instance:
-  image: ghcr.io/cirruslabs/macos-ventura-xcode:latest
+  image: ghcr.io/cirruslabs/macos-ventura-xcode:15
 
 task:
   name: AppleM1/LLVM
   compile_script:
   - xcodebuild -version
+  - ls -l /Applications/Xcode-14.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
   - export CC=/Applications/Xcode-14.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
   - export CFLAGS="-O2 -unwindlib=none -Wno-macro-redefined -isysroot /Applications/Xcode-14.0.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk"
   - make TARGET=VORTEX FC=gfortran