diff --git a/ChangeLog b/ChangeLog
index c12b5943d9..ff267517f3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Oct 29 14:36:50 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* common.mk (revision.h): have to be updated daily or by non-trivial
+	  commits.
+
 Wed Oct 29 13:18:02 2008  Akinori MUSHA  <knu@iDaemons.org>
 
 	* README, README.ja: Update the portability section.
diff --git a/common.mk b/common.mk
index 39d9ce8302..ca4b6c60ae 100644
--- a/common.mk
+++ b/common.mk
@@ -671,7 +671,7 @@ prereq: incs srcs preludes
 preludes: {$(VPATH)}miniprelude.c
 preludes: {$(srcdir)}golf_prelude.c
 
-$(srcdir)/revision.h: $(REVISION_FORCE)
+$(srcdir)/revision.h: $(srcdir)/version.h $(srcdir)/ChangeLog $(REVISION_FORCE)
 	@set LC_MESSAGES=C
 	-@$(SET_LC_MESSAGES) $(VCS) info "$(@D)" | \
 	sed -n "s/.*Rev:/#define RUBY_REVISION/p" > "$@.tmp"