diff --git a/README.OpenSource b/README.OpenSource
index 9993653867759e97cc97946ab5d0981285f92423..39358fb18a3e0f95c3bac055dcce243ff715b586 100644
--- a/README.OpenSource
+++ b/README.OpenSource
@@ -3,7 +3,7 @@
     "Name": "LLVM",
     "License": "Apache License v2.0 with LLVM Exceptions",
     "License File": "./libunwind/LICENSE.TXT ./lld/LICENSE.TXT ./polly/tools/GPURuntime/LICENSE.TXT ./libcxxabi/LICENSE.TXT ./llvm/include/llvm/Support/LICENSE.TXT ./llvm/utils/unittest/googletest/LICENSE.TXT ./llvm/LICENSE.TXT ./compiler-rt/LICENSE.TXT ./clang-tools-extra/clang-tidy/cert/LICENSE.TXT ./clang-tools-extra/clang-tidy/hicpp/LICENSE.TXT ./clang-tools-extra/LICENSE.TXT ./lldb/LICENSE.TXT ./llgo/LICENSE.TXT ./libcxx/LICENSE.TXT ./clang/LICENSE.TXT ./libclc/LICENSE.TXT ./parallel-libs/acxxel/LICENSE.TXT",
-    "Version Number": "12.0.1",
+    "Version Number": "15.0.4",
     "Owner": "sunqiang13@huawei.com",
     "Upstream URL": "http://llvm.org/",
     "Description": "The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. Despite its name, LLVM has little to do with traditional virtual machines. The name \"LLVM\" itself is not an acronym; it is the full name of the project."
diff --git a/llvm-build/README.md b/llvm-build/README.md
index caedd116f21c88530e0e7d5e49f5377334c5c0d4..8ddd2c9131a56f282c891e96bc1473c3b3424b58 100644
--- a/llvm-build/README.md
+++ b/llvm-build/README.md
@@ -108,7 +108,7 @@ License: Apache License v2.0 with LLVM Exceptions
 
 ### Functionality
 
-The LLVM toolchain is built based on LLVM 12.0.1. It is used to provide capability of building ohos image. For detailed information about LLVM 12.0.1, please refer to [LLVM 12.0.1](https://lists.llvm.org/pipermail/llvm-announce/2021-July/000093.html).
+The LLVM toolchain is built based on LLVM 15.0.4. It is used to provide capability of building ohos image. For detailed information about LLVM 15.0.4, please refer to [LLVM 15.0.4](https://discourse.llvm.org/t/llvm-15-0-4-released/66337).
 </br>
 
 ### Specifically Included Triplets
diff --git a/llvm-build/toolchain_readme.md b/llvm-build/toolchain_readme.md
index eb042745aa1111f0037f519bc1f0403d8148a68f..de059bf7752f740cb6449e3da07f8f77591a4f78 100644
--- a/llvm-build/toolchain_readme.md
+++ b/llvm-build/toolchain_readme.md
@@ -4,7 +4,7 @@ This readme briefly describes the functionality of our LLVM toolchain and what w
 
 ## Functionality
 
-The LLVM toolchain is built based on LLVM 12.0.1. It is used to provide capability of building ohos image. For detailed information about LLVM 12.0.1, please refer to [LLVM 12.0.1](https://lists.llvm.org/pipermail/llvm-announce/2021-July/000093.html).
+The LLVM toolchain is built based on LLVM 15.0.4. It is used to provide capability of building ohos image. For detailed information about LLVM 15.0.4, please refer to [LLVM 15.0.4](https://discourse.llvm.org/t/llvm-15-0-4-released/66337).
 </br>