diff --git a/clang.spec b/clang.spec
index 62fd4ce728cf2396888d15e42e9d711127fe251d..1759a5a2c99d0b03cffa287afcfe8655b394ae34 100644
--- a/clang.spec
+++ b/clang.spec
@@ -1,4 +1,4 @@
-%define anolis_release 1
+%define anolis_release 2
 
 %global toolchain clang
  
@@ -137,6 +137,7 @@ Requires: %{name} = %{version}-%{release}
 # The clang CMake files reference tools from clang-tools-extra.
 Requires: %{name}-tools-extra = %{version}-%{release}
 Requires: %{name}-libs = %{version}-%{release}
+Requires: cmake(llvm) = %{version}
 
 %description devel
 Development header files for clang.
@@ -466,6 +467,9 @@ LD_LIBRARY_PATH=%{buildroot}/%{_libdir} %{__ninja} check-all -C %{__cmake_buildd
 %{python3_sitelib}/clang/
 
 %changelog
+* Fri May 19 2023 Funda Wang <fundawang@yeah.net> - 16.0.4-2
+- More strict llvm version requirement on cmake-devel
+
 * Thu May 18 2023 Funda Wang <fundawang@yeah.net> - 16.0.4-1
 - New version 16.0.4