diff --git a/subjects/card_deck/README.md b/subjects/card_deck/README.md
index ae4f29aa..1ad7631d 100644
--- a/subjects/card_deck/README.md
+++ b/subjects/card_deck/README.md
@@ -25,7 +25,7 @@ Define:
 
 ### Notions
 
-[Crate rand](https://docs.rs/rand/0.5.0/rand/)
+[Crate rand](https://docs.rs/rand/0.3.14/rand/)
 [Enums](https://doc.rust-lang.org/book/ch06-00-enums.html)
 
 ### Expected Functions and Structures