diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index 2058f33a5..e9f9e5f4b 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -36,7 +36,7 @@
 .ds f0 "\*(vr
 .ds f1
 .\"DO NOT REMOVE NH_DATESUB .ds f2 "DATE(%B %-d, %Y)
-.ds f2 "January 11, 2022
+.ds f2 "January 16, 2022
 .
 .\" A note on some special characters:
 .\" \(lq = left double quote
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index 84fde4b6e..f57c34ebe 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -46,7 +46,7 @@
 \author{Original version - Eric S. Raymond\\
 (Edited and expanded for 3.7 by Mike Stephenson and others)}
 %DO NOT REMOVE NH_DATESUB \date{DATE(%B %-d, %Y)}
-\date{January 11, 2022}
+\date{January 16, 2022}
 
 \maketitle