diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 3e7d1d54f1284..075756b73ba82 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -463,6 +463,8 @@ def download_stage0(self):
                 "--",
                 "{}/src/llvm-project".format(top_level),
                 "{}/src/bootstrap/download-ci-llvm-stamp".format(top_level),
+                # the LLVM shared object file is named `LLVM-12-rust-{version}-nightly`
+                "{}/src/version".format(top_level)
             ]).decode(sys.getdefaultencoding()).strip()
             llvm_assertions = self.get_toml('assertions', 'llvm') == 'true'
             llvm_root = self.llvm_root()