diff --git a/clang.spec b/clang.spec
index 0b0b0ab..03cf84b 100644
--- a/clang.spec
+++ b/clang.spec
@@ -99,6 +99,7 @@ Patch201:   0001-clang-tools-extra-Make-test-dependency-on-LLVMHello-.patch
 #   to compile clang.
 BuildRequires: gcc-toolset-12-gcc-c++
 BuildRequires: gcc-toolset-12-annobin-plugin-gcc
+BuildRequires: gcc-toolset-12-libatomic-devel
 BuildRequires:	clang
 BuildRequires:	cmake
 BuildRequires:	ninja-build