diff --git a/.changeset/cool-schools-vanish.md b/.changeset/cool-schools-vanish.md
new file mode 100644
index 0000000000..9b2ded5248
--- /dev/null
+++ b/.changeset/cool-schools-vanish.md
@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+Fixing loading of additional config files with new `ConfigSources`
diff --git a/packages/cli/src/lib/config.ts b/packages/cli/src/lib/config.ts
index 49cce1f1ed..aab16a8670 100644
--- a/packages/cli/src/lib/config.ts
+++ b/packages/cli/src/lib/config.ts
@@ -70,7 +70,7 @@ export async function loadCliConfig(options: Options) {
       : undefined,
     watch: Boolean(options.watch),
     rootDir: paths.targetRoot,
-    argv: options.args,
+    argv: options.args.flatMap(t => ['--config', paths.resolveTarget(t)]),
   });
 
   const appConfigs = await new Promise<AppConfig[]>((resolve, reject) => {