diff --git a/.cirrus.yml b/.cirrus.yml
index 3912f315a..129890642 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -18,7 +18,8 @@ task:
   - brew install llvm
   - export PATH=/opt/homebrew/opt/llvm/bin:$PATH
   - export LDFLAGS="-L/opt/homebrew/opt/llvm/lib"
-  - export CPPFLAGS="-I/opt/homebrew/opt/llvm/include"  
+  - export CPPFLAGS="-I/opt/homebrew/opt/llvm/include" 
+  - export SDKROOT=$(xcrun --sdk iphonesimulator --show-sdk-path)
   - export CC=/Applications/Xcode-13.4.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
   - export CFLAGS="-O2 -Wno-macro-redefined -isysroot /Applications/Xcode-13.4.1.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.5.sdk -arch x86_64 -miphoneos-version-min=10.0"
   - make TARGET=CORE2 DYNAMIC_ARCH=1 NUM_THREADS=32 HOSTCC=clang NOFORTRAN=1