diff --git a/mdbook-linkcheck b/mdbook-linkcheck
index d99b568..21cae7e 160000
--- a/mdbook-linkcheck
+++ b/mdbook-linkcheck
@@ -1 +1 @@
-Subproject commit d99b568809948c2acdb0813f9654bb2ba75a6ae0
+Subproject commit 21cae7e9227de39a89ae8da9b41ff97526536b37