diff --git a/core/MAINTAINERS.txt b/core/MAINTAINERS.txt
index a73320d75f64e29849de4bdad7121572a1d24008..40d1fd9afb635c0b58a22ba76d22edd46680002b 100644
--- a/core/MAINTAINERS.txt
+++ b/core/MAINTAINERS.txt
@@ -93,6 +93,7 @@ Block
 
 Block Content
 - Lee Rowlands 'larowlan' https://www.drupal.org/u/larowlan
+- Stephen Mustgrave 'smustgrave' https://www.drupal.org/u/smustgrave
 
 Book
 - Peter Wolanin 'pwolanin' https://www.drupal.org/u/pwolanin