rephrase has_key doc
diff --git a/Doc/ACKS.txt b/Doc/ACKS.txt
index 7680d00..0bff6bd 100644
--- a/Doc/ACKS.txt
+++ b/Doc/ACKS.txt
@@ -16,6 +16,7 @@
    * A. Amoroso
    * Pehr Anderson
    * Oliver Andrich
+   * Heidi Annexstad
    * Jesús Cea Avión
    * Daniel Barclay
    * Chris Barker