diff --git a/doc/releases/release-notes-3.5.rst b/doc/releases/release-notes-3.5.rst
index eb3372efd7a..b88cb90636b 100644
--- a/doc/releases/release-notes-3.5.rst
+++ b/doc/releases/release-notes-3.5.rst
@@ -47,6 +47,9 @@ https://docs.zephyrproject.org/latest/security/vulnerabilities.html
 Kernel
 ******
 
+* Added support for dynamic thread stack allocation via :c:func:`k_thread_stack_alloc`
+* Added support for :c:func:`k_spin_trylock`
+
 Architectures
 *************