diff --git a/ucx.spec b/ucx.spec
index 1173280..9bcee2d 100644
--- a/ucx.spec
+++ b/ucx.spec
@@ -16,7 +16,7 @@
 
 Name: ucx
 Version: 1.8.1
-Release: 3%{?dist}
+Release: 4%{?dist}
 Summary: UCX is a communication library implementing high-performance messaging
 
 License: BSD
@@ -91,6 +91,9 @@ Provides header files and examples for developing with UCX.
 %patch -p1
 
 %build
+# gcc-11 emits a diagnostic for some fishy casting.  The code is probably OK.
+# Disable the diagnostic for now
+export CFLAGS="$RPM_OPT_FLAGS -Wno-array-bounds"
 %define _with_arg()   %{expand:%%{?with_%{1}:--with-%{2}}%%{!?with_%{1}:--without-%{2}}}
 %define _enable_arg() %{expand:%%{?with_%{1}:--enable-%{2}}%%{!?with_%{1}:--disable-%{2}}}
 %configure --disable-optimizations \
@@ -289,6 +292,9 @@ process to map the memory of another process into its virtual address space.
 
 
 %changelog
+* Thu Oct 29 2020 Jeff Law <law@redhat.com> 1.8.1-4
+- Disable -Warray-bounds diagnostics for gcc-11
+
 * Wed Jul 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.8.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild