diff --git a/libunistring-1.0.tar.xz b/libunistring-1.0.tar.xz
new file mode 100644
index 0000000..1c6c8e1
Binary files /dev/null and b/libunistring-1.0.tar.xz differ
diff --git a/libunistring-1.1.tar.xz b/libunistring-1.1.tar.xz
deleted file mode 100644
index df76d5a..0000000
Binary files a/libunistring-1.1.tar.xz and /dev/null differ
diff --git a/libunistring.spec b/libunistring.spec
index 0464842..44f62fc 100644
--- a/libunistring.spec
+++ b/libunistring.spec
@@ -1,5 +1,5 @@
 Name:		libunistring
-Version:	1.1
+Version:	1.0
 Release:	1
 Summary:	GNU Unicode string library
 License:	GPLV2+ or LGPLv3+
@@ -35,7 +35,6 @@ This package is the development files for GUN Unicode string library.
 rm -f %{buildroot}%{_libdir}/%{name}.la
 rm -f %{buildroot}%{_infodir}/dir
 mv %{buildroot}%{_datadir}/doc/%{name} tmp_doc
-cp -p %{_libdir}/%{name}.so.2 %{buildroot}%{_libdir}
 
 %check
 make check
@@ -46,9 +45,7 @@ make check
 %defattr(-,root,root)
 %doc THANKS AUTHORS
 %license COPYING*
-%{_libdir}/%{name}.so.5
-%{_libdir}/%{name}.so.5.0.0
-%{_libdir}/%{name}.so.2
+%{_libdir}/%{name}.so.*
 
 %files devel
 %defattr(-,root,root)
@@ -62,6 +59,12 @@ make check
 %doc README DEPENDENCIES
 
 %changelog
+* Mon Nov 07 2022 fuanan <fuanan3@h-partners.com> - 1.0-1
+- Type:enhancement
+- ID:NA
+- SUG:NA
+- DESC:downgrade version to 1.0
+
 * Fri Nov 04 2022 fuanan <fuanan3@h-partners.com> - 1.1-1
 - Type:enhancement
 - ID:NA