diff --git a/lib/docs/scrapers/rust.rb b/lib/docs/scrapers/rust.rb
index 4effca80..b4e89b66 100644
--- a/lib/docs/scrapers/rust.rb
+++ b/lib/docs/scrapers/rust.rb
@@ -1,7 +1,7 @@
 module Docs
   class Rust < UrlScraper
     self.type = 'rust'
-    self.release = '1.20.0'
+    self.release = '1.21.0'
     self.base_url = 'https://doc.rust-lang.org/'
     self.root_path = 'book/first-edition/index.html'
     self.initial_paths = %w(