diff --git a/rubygem-cool.io.spec b/rubygem-cool.io.spec
index 29844b3..ceda613 100644
--- a/rubygem-cool.io.spec
+++ b/rubygem-cool.io.spec
@@ -74,7 +74,8 @@ mv %{buildroot}/filelist.lst .
 
 %changelog
 * Wed Aug 25 2021 wutao <wutao61@huawei.com> - 1.7.1-2
-- change .so files directory
+- Move .so file from /usr/lib64/gems/ruby/cool.io-1.7.1/cool.io/ to
+  /usr/lib64/gems/ruby/cool.io-1.7.1/ to solve fluentd loaderror problems
 
 * Mon Aug 02 2021 wutao <wutao61@huawei.com> - 1.7.1-1
 - Package init