diff --git a/doc/userdoc/release_notes/v3.1/index.rst b/doc/userdoc/release_notes/v3.1/index.rst
index e859b79752..08344fa46e 100644
--- a/doc/userdoc/release_notes/v3.1/index.rst
+++ b/doc/userdoc/release_notes/v3.1/index.rst
@@ -64,3 +64,6 @@ Deprecation information
 * Model ``pp_pop_psc_delta`` has been deprecated since 2016 and
   will be removed in NEST 3.2. Please use model :doc:`gif_pop_psc_exp <gif_pop_psc_exp>`
   instead.
+* The `nest.hl_api` namespace contained the same members as `nest`
+  and is being removed in NEST 3.2. All imports from `nest.hl_api`
+  can be replaced by imports from `nest`.