diff --git a/lib/modules/manager/argocd/extract.ts b/lib/modules/manager/argocd/extract.ts
index fa1e6d2793fc9f..210a4d65a26f83 100644
--- a/lib/modules/manager/argocd/extract.ts
+++ b/lib/modules/manager/argocd/extract.ts
@@ -81,6 +81,7 @@ export function extractPackageFile(
   }
 
   const deps = definitions
+    .filter(is.plainObject)
     .map((definition) => createDependency(definition))
     .filter(is.truthy);