diff --git a/tools/setup.sh b/tools/setup.sh
index 77add1ac..01149994 100755
--- a/tools/setup.sh
+++ b/tools/setup.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-llvm_version=14
+llvm_version=15
 
 brew update
 brew install llvm@$llvm_version