diff --git a/ChangeLog b/ChangeLog
index c96c8780bf..d7d66d9289 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Sep  9 11:33:05 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* common.mk (update-gems): use BASERUBY instead of RUNRUBY.
+
 Wed Sep  9 11:08:59 2015  Zachary Scott  <zzak@ruby-lang.org>
 
 	* lib/delegate.rb: Remove backtrace cleaning for delegated methods
diff --git a/common.mk b/common.mk
index ded9bc239c..6e5103379d 100644
--- a/common.mk
+++ b/common.mk
@@ -934,7 +934,7 @@ update-config_files: PHONY
 
 update-gems: PHONY
 	$(ECHO) Downloading bundled gem files...
-	$(Q) $(RUNRUBY) -C "$(srcdir)/gems" \
+	$(Q) $(BASERUBY) -C "$(srcdir)/gems" \
 	    -I../tool -rdownloader -answ \
 	    -e 'gem, ver = *$$F' \
 	    -e 'old = Dir.glob("#{gem}-*.gem")' \