diff --git a/book.toml b/book.toml
index 8c13fa1a..93e40ef5 100644
--- a/book.toml
+++ b/book.toml
@@ -9,3 +9,4 @@ description = "A guide to developing rustc"
 
 [output.linkcheck]
 follow-web-links = true
+exclude = [ "crates\\.io" ]