diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index f884ddb89..7cdebb4b4 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -46,7 +46,7 @@
 .ds f0 \*(vr
 .ds f1 \" empty
 .\"DO NOT REMOVE NH_DATESUB .ds f2 DATE(%B %-d, %Y)
-.ds f2 February 06, 2024
+.ds f2 February 29, 2024
 .
 .\" A note on some special characters:
 .\" \(lq = left double quote
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index fef06e8e9..6e26de554 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -48,7 +48,7 @@
 \author{Original version - Eric S. Raymond\\
 (Edited and expanded for 3.7.0 by Mike Stephenson and others)}
 %DO NOT REMOVE NH_DATESUB \date{DATE(%B %-d, %Y)}
-\date{February 06, 2024}
+\date{February 29, 2024}
 
 \maketitle