diff --git a/cmake/README.md b/cmake/README.md
index a9e6efd..b68d32a 100644
--- a/cmake/README.md
+++ b/cmake/README.md
@@ -4,6 +4,6 @@
 
 | 文件 | 内容 |
 |---|---|
-| `Standards.cmake` | C11、C++11；`STANDARD_REQUIRED`；关闭 GNU 扩展 |
+| `Standards.cmake` | C17、C++20；`STANDARD_REQUIRED`；关闭 GNU 扩展 |
 
 不要按词法、VM、host 再拆成业务 CMake module。改语言标准只改本目录，不要在各子目录再 `set(CMAKE_CXX_STANDARD …)`。
diff --git a/cmake/Standards.cmake b/cmake/Standards.cmake
index e4dcdd9..f34e2ab 100644
--- a/cmake/Standards.cmake
+++ b/cmake/Standards.cmake
@@ -1,8 +1,8 @@
 # C / C++ 语言标准。在 project() 之后 include，对后续目标生效。
-set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD 17)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 set(CMAKE_C_EXTENSIONS OFF)
 
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)