diff --git a/Misc/ACKS b/Misc/ACKS
index 414cda9..0aeb1b1 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -120,6 +120,7 @@
 Thomas Bellman
 Alexander “Саша” Belopolsky
 Eli Bendersky
+Nikhil Benesch
 David Benjamin
 Oscar Benjamin
 Andrew Bennetts
diff --git a/Misc/NEWS b/Misc/NEWS
index 28d9bb1b..a6979dc 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -329,6 +329,8 @@
   make time when --with-optimizations is enabled.  Also improve our
   ability to find the llvm-profdata tool on MacOS and some Linuxes.
 
+- Issue #21590: Support for DTrace and SystemTap probes.
+
 - Issue #26307: The profile-opt build now applys PGO to the built-in modules.
 
 - Issue #26539: Add the --with-optimizations flag to turn on LTO and PGO build