diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index 1094c6662..ac9fc70b5 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -47,7 +47,7 @@
 .ds f0 \*(vr
 .ds f1 \" empty
 .\"DO NOT REMOVE NH_DATESUB .ds f2 Date(%B %-d, %Y)
-.ds f2 October 24, 2025
+.ds f2 December 03, 2025
 .
 .\" A note on some special characters:
 .\" \(lq = left double quote
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index 4bd01c70c..bdc21ecc6 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{October 24, 2025}
+\date{December 03, 2025}
 
 \maketitle