diff --git a/marker_lints/README.md b/marker_lints/README.md
index a612099c..84828ad4 100644
--- a/marker_lints/README.md
+++ b/marker_lints/README.md
@@ -20,6 +20,7 @@ A collection of lints for the development of lint crates with the [marker_api] a
 
 This crate currently provides the following lints:
 * `marker::diag_msg_uppercase_start`
+* `marker::not_using_has_span_trait`
 
 ## Usage