diff --git a/cloud.spec b/cloud.spec
index 127dfa4e048..9f46dd6fe6c 100644
--- a/cloud.spec
+++ b/cloud.spec
@@ -224,6 +224,7 @@ Requires: jna
 Requires: ebtables
 Requires: jsvc
 Requires: jakarta-commons-daemon
+Requires: bridge-utils
 Group:     System Environment/Libraries
 
 Requires: kvm
@@ -618,6 +619,9 @@ fi
 %doc NOTICE
 
 %changelog
+* Mon Nov 19 2012 Satoshi Kobayashi <satoshi-k@stratosphere.co.jp> 4.0.1
+- adding dependency bridge-utils to fix a system requirement
+
 * Fri Sep 14 2012 Marcus Sorensen <shadowsor@gmail.com> 4.0.1
 - adding dependency jakarta-commons-daemon to fix "cannot find daemon loader"