diff --git a/cargo-cyclonedx/src/purl.rs b/cargo-cyclonedx/src/purl.rs
index 4d600354..430386d4 100644
--- a/cargo-cyclonedx/src/purl.rs
+++ b/cargo-cyclonedx/src/purl.rs
@@ -22,7 +22,7 @@ pub fn get_purl(
                 Some(("git", _git_path)) => {
                     builder = builder.with_qualifier("vcs_url", source_to_vcs_url(source))?
                 }
-                Some(("registry", registry_url)) => {
+                Some(("registry" | "sparse", registry_url)) => {
                     builder = builder.with_qualifier("repository_url", registry_url)?
                 }
                 Some((source, _path)) => log::warn!("Unknown source kind {}", source),