diff --git a/llvm.spec b/llvm.spec
index 2565cabab5d2ee591a933454276fa84a8b410a68..37c1eeebaacc70c989d82d29c88c8530e63e0925 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -9,7 +9,7 @@
 # Build sys_llvm packages or compat packages
 %bcond_without sys_llvm
 %bcond_without check
-%bcond_without toolchain_clang
+%bcond_with toolchain_clang
 
 # mlir requires pybind11-2.9 but 22.03 only have pybind11-2.8
 %if %{os_version} <= 2203
@@ -150,11 +150,11 @@ Name:		  llvm
 Name:		  llvm-toolset-%{maj_ver}
 %endif
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}
-Release:	31
+Release:	35
 Summary:	The Low Level Virtual Machine
 
 License:	NCSA
-URL:		http://llvm.org
+URL:		https://gitee.com/openeuler/llvm-project
 
 Source0: https://gitee.com/openeuler/llvm-project/repository/archive/%{src_tarball}.tar.gz
 
@@ -2831,6 +2831,11 @@ fi
 #endregion files
 
 %changelog
+* Wed Apr 16 2025 liyunfei <liyunfei33@huawei.com> - 17.0.6-35
+- bump release so that separated clang pacakges could be updated
+- update to real upstream url
+- switch to gcc compiler temporarily
+
 * Tue Apr 15 2025 liyunfei <liyunfei33@huawei.com> - 17.0.6-31
 - fix package name for sys_llvm