diff --git a/actions.yml b/actions.yml
index 8b925c66..4b941f85 100644
--- a/actions.yml
+++ b/actions.yml
@@ -749,6 +749,10 @@ taiki-e/install-action:
   '*':
     expires_at: 2025-08-01
     keep: true
+tcort/github-action-markdown-link-check:
+  f3d33029dca1c4a24b87e2df648f9f4604ef6533:
+    expires_at: 2050-01-01
+    tag: v1.1.1
 test-summary/action:
   '*':
     expires_at: 2025-08-01