diff --git a/docs/concepts.md b/docs/concepts.md
index 99541c0df..a138d0ea6 100644
--- a/docs/concepts.md
+++ b/docs/concepts.md
@@ -43,6 +43,10 @@ In this example:
 3. Logfire calculates the age from the `dob` and displays age in the debug message
 
 ```py
+from datetime import date
+
+import logfire
+
 logfire.configure()
 
 with logfire.span('Asking the user for their {question}', question='birthday'):  # (1)!