diff --git a/support/download/cargo-post-process b/support/download/cargo-post-process
index 12198051a4..b0e59ad74d 100755
--- a/support/download/cargo-post-process
+++ b/support/download/cargo-post-process
@@ -31,14 +31,14 @@ post_process_unpack "${base_name}" "${output}"
 # Do the Cargo vendoring
 pushd "${base_name}" > /dev/null
 
-# Create the local .cargo/config with vendor info
+# Create the local .cargo/config.toml with vendor info
 mkdir -p .cargo/
 mkdir -p "${CARGO_HOME}"
 flock "${CARGO_HOME}"/.br-lock \
 cargo vendor \
     --manifest-path "${manifest}" \
     --locked VENDOR \
-    > .cargo/config
+    > .cargo/config.toml
 
 # "cargo vendor' outputs on stderr a message directing to add some data
 # to the project's .cargo/config.toml, data that it outputs on stdout.