diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3f012e31..5cf0905b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,6 +33,7 @@ endif()
 
 # Create the library target and named header set for beman_optional26
 add_library(beman_optional26 STATIC)
+target_compile_features(beman_optional26 PUBLIC cxx_std_20)
 target_sources(
     beman_optional26
     PUBLIC FILE_SET beman_optional26_headers TYPE HEADERS BASE_DIRS src include