diff --git a/SPECS/openmpi.spec b/SPECS/openmpi.spec
index b4c40ab..500e23f 100644
--- a/SPECS/openmpi.spec
+++ b/SPECS/openmpi.spec
@@ -22,7 +22,7 @@
 
 Name:			openmpi%{?_cc_name_suffix}
 Version:		4.0.5
-Release:		2%{?dist}
+Release:		3%{?dist}
 Summary:		Open Message Passing Interface
 Group:			Development/Libraries
 License:		BSD and MIT and Romio
@@ -141,7 +141,7 @@ OpenMPI support for Python 3.
 	--includedir=%{_includedir}/%{namearch} \
 	--sysconfdir=%{_sysconfdir}/%{namearch} \
 	--disable-silent-rules \
-	--enable-builtin-atomics \
+	--disable-builtin-atomics \
 	--enable-mpi-thread-multiple \
 %ifnarch %{power64}
 	--enable-mpi-cxx \
@@ -287,6 +287,10 @@ make check
 
 
 %changelog
+* Wed Jan 27 2021 Honggang Li <honli@redhat.com> - 4.0.5-3
+- disable gcc built-in atomics
+- Resolves: rhbz#1921262
+
 * Tue Nov 17 2020 Honggang Li <honli@redhat.com> - 4.0.5-2
 - Rebuild against ucx-1.9 and libfabric-1.11.1
 - Resolves: rhbz#1892128