diff --git a/support/download/cargo-post-process b/support/download/cargo-post-process
index 21a6be8dbe..aea2d8da7a 100755
--- a/support/download/cargo-post-process
+++ b/support/download/cargo-post-process
@@ -26,6 +26,8 @@ pushd "${base_name}" > /dev/null
 
 # Create the local .cargo/config with vendor info
 mkdir -p .cargo/
+mkdir -p "${CARGO_HOME}"
+flock "${CARGO_HOME}"/.br-lock \
 cargo vendor \
     --manifest-path ${BR_CARGO_MANIFEST_PATH-Cargo.toml} \
     --locked VENDOR \