diff --git a/Help/release/dev/thread-sanitizer.rst b/Help/release/dev/thread-sanitizer.rst
new file mode 100644
index 000000000..f38e8e139
--- /dev/null
+++ b/Help/release/dev/thread-sanitizer.rst
@@ -0,0 +1,5 @@
+thread-sanitizer
+----------------
+
+* The :command:`ctest_memcheck` command learned to support
+  ``ThreadSanitizer``.