diff --git a/xorriso/misc_funct.c b/xorriso/misc_funct.c
index 163a1185..da04cf68 100644
--- a/xorriso/misc_funct.c
+++ b/xorriso/misc_funct.c
@@ -510,7 +510,7 @@ int Decode_ecma119_format(struct tm *erg, char *text, int flag)
 
 
 int Decode_xorriso_timestamp(struct tm *erg, char *code, int flag)
-   /* 2007.11.07.225624 */
+   /* 2007.11.07.225624 or 2007_11_07_225624 */
 {
  char buf[20];
  int year,month,day,hour= 0,minute= 0,second= 0, i, l, mem;
@@ -525,19 +525,20 @@ int Decode_xorriso_timestamp(struct tm *erg, char *code, int flag)
  for(i= 0; buf[i]!=0 && i<4; i++)
    if(!isdigit(buf[i]))
      return(0);
- if(buf[4]!='.')
+ if(buf[4] != '.' && buf[4] != '_')
    return(0);
  buf[4]= 0;
  sscanf(buf, "%d", &year);
  if(year<1900 || year>3000)
    return(0);
- if(!(isdigit(buf[5]) && isdigit(buf[6]) && buf[7]=='.'))
+ if(!(isdigit(buf[5]) && isdigit(buf[6]) && (buf[7] == '.' || buf[7] == '_')))
    return(0);
  buf[7]= 0;
  sscanf(buf+5, "%d", &month);
  if(month<1 || month>12)
    return(0);
- if(!(isdigit(buf[8]) && isdigit(buf[9]) && (buf[10]=='.' || buf[10]==0)))
+ if(!(isdigit(buf[8]) && isdigit(buf[9]) &&
+      (buf[10]=='.' || buf[10]=='_' || buf[10]==0)))
    return(0);
  buf[10]= 0;
  sscanf(buf+8, "%d", &day);
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 0ac83775..4a5d01b0 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2024.05.19.204636"
+#define Xorriso_timestamP "2024.06.28.065555"