diff --git a/test_package/CMakeLists.txt b/test_package/CMakeLists.txt
index 1f0ba89a..79170dfe 100644
--- a/test_package/CMakeLists.txt
+++ b/test_package/CMakeLists.txt
@@ -4,7 +4,7 @@ project(test_package LANGUAGES CXX)
 include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
 conan_basic_setup(TARGETS)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 find_package (Threads REQUIRED)
 find_package (iomgr REQUIRED)