diff --git a/.hgtags b/.hgtags
index b55423c..ebeeba0 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,3 @@
 73cba5ddd1114214308f400a1550f64210f15068 v0
-ab9c4c4f9f7aa09958dbc105e43bbb51cd5c9d34 current
 ce2deaceb818dad84bb6a06079cceddeca2f3ef7 yatex-1.74
+801593454c59be43ddc14f725c647ab379b44c32 start-branch-for-1.75
diff --git a/ChangeLog b/ChangeLog
index 5db22d8..500aeaa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+
+*** ChangeLog file had been obsoleted.
+*** This file won't be maintained anymore.
+
 Fri Sep 13 19:29:59 1996  HIROSE Yuuji  <yuuji@supra.comp.ae.keio.ac.jp>
 
 	* yahtml.el (yahtml-collect-labels): 
diff --git a/makefile b/makefile
index 7660cea..a39d877 100644
--- a/makefile
+++ b/makefile
@@ -49,7 +49,7 @@
 # make clean		to delete all producted files
 # make ci		to check in all
 # make co		to check out all
-MVER	= 1.72
+MVER	= 1.74
 LISP	= ${LISP18} ${LISP19}
 YAHTML	= yahtml.el
 COMMON	= yatexlib.el yatexprc.el