diff --git a/generic-release.spec b/generic-release.spec
index d0f55b3afb9ca218ebb75a596158426ee0fc151a..8c9676ff44f0812a039064c4be11fe3061234e5f 100644
--- a/generic-release.spec
+++ b/generic-release.spec
@@ -6,7 +6,7 @@
 %define generic_version 20.03
 %define generic_patch_level LTS
 %define generic_patch_level_extend SP1
-%define generic_release 47
+%define generic_release 48
 %define builtin_release_version 1.0
 
 %define current_arch %{_arch}
@@ -36,7 +36,7 @@ Obsoletes: 	yum-utils yum-utils-help yum-utils-plugins
 %{product_family} release files
 
 %package -n openEuler-performance
-Requires:   coreutils systemd setup
+Requires:   coreutils systemd setup bc
 
 Summary:performance script
 %description -n openEuler-performance
@@ -137,6 +137,9 @@ rm -rf $RPM_BUILD_ROOT
 /etc/profile.d/performance.sh
 
 %changelog
+* Fri Dec 31 2021 gaochong <gaochong@uniontech.com> - 1.0-48
+- require bc for caculating free memory
+ 
 * Tue Dec 21 2021 gaochong <gaochong@uniontech.com> - 1.0-47
 - get memeroy info from /proc/meminfo instead of command free