diff --git a/doc/src/header.md b/doc/src/header.md
index cc86789..848c304 100644
--- a/doc/src/header.md
+++ b/doc/src/header.md
@@ -43,7 +43,7 @@ Note that `Date` is available since the chunk is evaluated first.
  ---
 
  ```julia; echo = false
- using Datas
+ using Dates
  ```
 ```