diff --git a/MANUAL.txt b/MANUAL.txt
index 6e94962a7..ea7d4877e 100644
--- a/MANUAL.txt
+++ b/MANUAL.txt
@@ -1161,6 +1161,7 @@ header when requesting a document from a URL:
         - Heading 8
         - Heading 9
         - Block Text
+        - Source Code
         - Footnote Text
         - Definition Term
         - Definition