diff --git toolchain/BUILD.llvm_repo toolchain/BUILD.llvm_repo
--- toolchain/BUILD.llvm_repo
+++ toolchain/BUILD.llvm_repo
@@ -124,3 +124,8 @@ filegroup(
     name = "strip",
     srcs = ["bin/llvm-strip"],
 )
+
+cc_import(
+    name = "macos_asan_dynamic",
+    shared_library = "lib/clang/13.0.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib",
+)