diff --git a/source/en/attributions.txt b/source/en/attributions.txt
index 42e33db..49b925b 100644
--- a/source/en/attributions.txt
+++ b/source/en/attributions.txt
@@ -48,6 +48,10 @@ Here is a list of the sections of the document and their sources and authorship:
 
 <<understanding-modules>>::
   Written by https://www.drupal.org/u/jhodgdon[Jennifer Hodgdon].
+  
+<<understanding-themes>>::
+  Written and edited by https://www.drupal.org/u/jgrubb[John Grubb] and 
+  https://www.drupal.org/u/jhodgdon[Jennifer Hodgdon].
 
 <<understanding-distributions>>::
   Adapted by https://www.drupal.org/u/diana.lakatos[Diána Lakatos]
@@ -61,6 +65,7 @@ Here is a list of the sections of the document and their sources and authorship:
   https://www.drupal.org/node/2120523["Overview of Configuration (vs. other types of information)"],
   copyright 2000-2015 by the individual contributors to the
   https://www.drupal.org/documentation[Drupal Community Documentation]
+  
 
 <<understanding-gpl>>::
   Adapted by https://www.drupal.org/u/diana.lakatos[Diána Lakatos] at