diff --git a/libnccl-cuda-11.spec b/libnccl-cuda-11.spec
index b9f462c378a0d8ff83f90496b668f833dd6d2b5f..bd1ebfb1ba2879ef29c80f84c0b0fd3d6f0b5807 100644
--- a/libnccl-cuda-11.spec
+++ b/libnccl-cuda-11.spec
@@ -1,11 +1,11 @@
-%define anolis_release 2
+%define anolis_release 1
 
 %global _lto_cflags %{nil}
 %define cuda_ver 11-8
 %define cuda_main_version 11
 
 Name: libnccl-cuda-%{cuda_main_version}
-Version: 2.19.3
+Version: 2.20.5
 Release: %{anolis_release}%{?dist}
 Summary: NVIDIA Collective Communication Library (NCCL) Runtime for cuda %{cuda_main_version}
 License: BSD
@@ -18,6 +18,7 @@ BuildRequires: cuda-%{cuda_ver}
 AutoReqProv: no
 Requires: libgcc libstdc++
 Conflicts: libnccl
+ExclusiveArch: x86_64 aarch64
 
 %description
 NCCL (pronounced "Nickel") is a stand-alone library of standard collective
@@ -79,6 +80,9 @@ cp build/lib/pkgconfig/nccl.pc %{buildroot}%{_libdir}/pkgconfig/
 %{_libdir}/libnccl_static.a
 
 %changelog
+* Wed Jun 19 2024 Chunmei Xu <xuchunmei@linux.alibaba.com> - 2.20.5-1
+- update to 2.20.5
+
 * Tue Mar 05 2024 Chunmei Xu <xuchunmei@linux.alibaba.com> - 2.19.3-2
 - set conflicts with libnccl for cuda12
 
diff --git a/nccl-2.19.3-1.tar.gz b/nccl-2.19.3-1.tar.gz
deleted file mode 100644
index 2e8a07ab1560bfcdc2ccfd2acc3fb3ae4b078516..0000000000000000000000000000000000000000
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diff --git a/nccl-2.20.5-1.tar.gz b/nccl-2.20.5-1.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..b6c5dfc350fb5d23468ebbd09b480e8577e61611
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