diff --git a/cli/tools/registry/mod.rs b/cli/tools/registry/mod.rs
index cfdec04c560823..0cd50e46dd2a04 100644
--- a/cli/tools/registry/mod.rs
+++ b/cli/tools/registry/mod.rs
@@ -68,6 +68,7 @@ struct PreparedPublishPackage {
   package: String,
   version: String,
   tarball: PublishableTarball,
+  config: String,
 }
 
 impl PreparedPublishPackage {
@@ -158,6 +159,13 @@ async fn prepare_publish(
     package: package_name.to_string(),
     version: version.to_string(),
     tarball,
+    // the config file is always at the root of a publishing dir,
+    // so getting the file name is always correct
+    config: config_path
+      .file_name()
+      .unwrap()
+      .to_string_lossy()
+      .to_string(),
   }))
 }
 
@@ -541,8 +549,12 @@ async fn publish_package(
   );
 
   let url = format!(
-    "{}scopes/{}/packages/{}/versions/{}",
-    registry_api_url, package.scope, package.package, package.version
+    "{}scopes/{}/packages/{}/versions/{}?config=/{}",
+    registry_api_url,
+    package.scope,
+    package.package,
+    package.version,
+    package.config
   );
 
   let response = client