diff --git a/generic-release.spec b/generic-release.spec
index 747bef229f9252438a1f56c2220eba86260aab2e..48c59b6d5a4eac8c62c47c8acda9f7a3ae4a860d 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 SP3
-%define generic_release 47
+%define generic_release 48
 %define builtin_release_version 1.0
 
 %define current_arch %{_arch}
@@ -42,7 +42,7 @@ Obsoletes: 	yum-utils yum-utils-help yum-utils-plugins
 %{product_family} release files
 
 %package -n %{product_family}-performance
-Requires:   coreutils systemd setup
+Requires:   coreutils systemd setup bc
 
 Summary:         performance script
 %description -n %{product_family}-performance
@@ -170,6 +170,9 @@ rm -rf $RPM_BUILD_ROOT
 %config(noreplace) /root/.cshrc
 
 %changelog
+* Thu Dec 30 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