diff --git a/cc/config/global.go b/cc/config/global.go
index bc067ad17..8b6df3043 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -359,7 +359,7 @@ var (
 	CStdVersion               = "gnu17"
 	CppStdVersion             = "gnu++20"
 	ExperimentalCStdVersion   = "gnu2x"
-	ExperimentalCppStdVersion = "gnu++2a"
+	ExperimentalCppStdVersion = "gnu++2b"
 
 	// prebuilts/clang default settings.
 	ClangDefaultBase         = "prebuilts/clang/host"