diff --git a/stl/inc/yvals_core.h b/stl/inc/yvals_core.h
index ea6762d0d2d..ce83ff45727 100644
--- a/stl/inc/yvals_core.h
+++ b/stl/inc/yvals_core.h
@@ -314,6 +314,7 @@
 // P2905R2 Runtime Format Strings
 // P2909R4 Fix Formatting Of Code Units As Integers
 // P2997R1 Removing The Common Reference Requirement From The Indirectly Invocable Concepts
+// P3136R1 Retiring Niebloids
 
 // _HAS_CXX20 indirectly controls:
 // P0619R4 Removing C++17-Deprecated Features