diff --git a/GUI/xephem/patchlevel.c b/GUI/xephem/patchlevel.c
index 1757056..bb6aab8 100644
--- a/GUI/xephem/patchlevel.c
+++ b/GUI/xephem/patchlevel.c
@@ -5,5 +5,5 @@
 #include "xephem.h"
 
 char PATCHLEVEL[] = "4.2.0";
-char PATCHDATE[] = "2021 September 13";
+char PATCHDATE[] = "2024 February 13";
 char COPYRIGHT[] = "Copyright (c) 1990-2021 by Elwood Charles Downey";