diff --git a/clang.spec b/clang.spec
index 5e51cbc..1b1d349 100644
--- a/clang.spec
+++ b/clang.spec
@@ -47,7 +47,7 @@
 
 Name:		%pkg_name
 Version:	%{clang_version}%{?rc_ver:~rc%{rc_ver}}
-Release:	6%{?dist}
+Release:	7%{?dist}
 Summary:	A C language family front-end for LLVM
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA
@@ -100,6 +100,9 @@ Patch13:     0001-Driver-Give-devtoolset-path-precedence-over-Installe.patch
 Patch201:   0001-clang-tools-extra-Make-test-dependency-on-LLVMHello-.patch
 %endif
 
+# Required for 64-bit atomics on i686.
+# TODO: Update to gts_version on next clang build.
+BuildRequires: gcc-toolset-12-libatomic-devel
 # Required to handle LTO debuginfo.
 BuildRequires: gcc-toolset-%{gts_version}-gdb
 BuildRequires:	clang
@@ -686,6 +689,9 @@ mv ./libclang-cpp.so.%{compat_maj_ver} "$compat_lib"
 
 %endif
 %changelog
+* Fri Jun 30 2023 Nikita Popov <npopov@redhat.com> - 16.0.1-7
+- Restore gcc-toolset-libatomic-devel requirement
+
 * Fri Jun 30 2023 Nikita Popov <npopov@redhat.com> - 16.0.1-6
 - Switch to gcc-toolset-13-gcc