diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index 280916675..e898a3a25 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -729,6 +729,10 @@ paths:
       responses:
         200:
           description: Retrieved tags from a relevant repository successfully.
+          schema:
+            type: array
+            items:
+              type: string
         500:
           description: Unexpected internal errors.
   /repositories/manifests: