diff --git a/.github/workflows/external-healthcheck.yml b/.github/workflows/external-healthcheck.yml
index 12ed081e..d9fb8a37 100644
--- a/.github/workflows/external-healthcheck.yml
+++ b/.github/workflows/external-healthcheck.yml
@@ -22,7 +22,7 @@ on:
       check:
         description: "Check ID"
         required: true
-        type: string
+        type: number
 
 jobs: