diff --git a/docs/ics_format.txt b/docs/ics_format.txt
index ac7cf1b..33db92b 100644
--- a/docs/ics_format.txt
+++ b/docs/ics_format.txt
@@ -25,6 +25,9 @@ DTSTART;TZID=/freeassociation.sourceforge.net/Europe/Berlin:
 DTEND;TZID=/freeassociation.sourceforge.net/Europe/Berlin:
  20230914T040000
 
+SEQUENCE is the number of times the event was modified.
+Evolution sets this to 2 after it has been generated.
+
 Appointments include the continent and city of the used time zone.
 
 "DESCRIPTION:" is an optional field.
diff --git a/src/insert_event.c b/src/insert_event.c
index 0cbb19a..5c00896 100644
--- a/src/insert_event.c
+++ b/src/insert_event.c
@@ -62,7 +62,18 @@ void insert_event(char *file_name) {
 	write(myfd, "\r\n", strlen("\r\n"));
 	write(myfd, dtstart_buffer, strlen(dtstart_buffer));
 	write(myfd, dtend_buffer, strlen(dtend_buffer));
+	write(myfd, "SEQUENCE:2\r\n", strlen("SEQUENCE:2\r\n"));
 	write(myfd, summary_buf, strlen(summary_buf));
+	write(myfd, "TRANSP:OPAQUE\r\n", strlen("TRANSP:OPAQUE\r\n"));
+	write(myfd, "CLASS:PUBLIC\r\n", strlen("CLASS:PUBLIC\r\n"));
+	write(myfd, "CREATED:", strlen("CREATED:"));
+	write(myfd, dtstamp, strlen(dtstamp));
+	write(myfd, "\r\n", strlen("\r\n"));
+	write(myfd, "LAST-MODIFIED:", strlen("LAST-MODIFIED:"));
+	write(myfd, dtstamp, strlen(dtstamp));
+	write(myfd, "\r\n", strlen("\r\n"));
+	write(myfd, "END:VEVENT\r\n", strlen("END:VEVENT\r\n"));
+	
 	write(myfd, "END:VCALENDAR\r\n", strlen("END:VCALENDAR\r\n"));
 
 	close(myfd);