diff --git a/AUTHORS.md b/AUTHORS.md
index 3edba5f25c..84f465414e 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -71,6 +71,7 @@ Programmers
     David Teviotdale (dteviot)
     Diggory Hardy
     Dmitry Marakasov (AMDmi3)
+    Duncan Frost (duncans_pumpkin)
     Edmondo Tommasina (edmondo)
     Eduard Cot (trombonecot)
     Eli2