diff --git a/include/gbinder_local_object.h b/include/gbinder_local_object.h
index 83bafb7..75a56f8 100644
--- a/include/gbinder_local_object.h
+++ b/include/gbinder_local_object.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2018-2019 Jolla Ltd.
- * Copyright (C) 2018-2019 Slava Monich <slava.monich@jolla.com>
+ * Copyright (C) 2018-2024 Slava Monich <slava@monich.com>
  *
  * You may use this file under the terms of BSD license as follows:
  *
@@ -64,7 +64,7 @@ gbinder_local_object_new_reply(
 void
 gbinder_local_object_set_stability(
     GBinderLocalObject* self,
-    GBINDER_STABILITY_LEVEL stability); /* Since 1.0.40 */
+    GBINDER_STABILITY_LEVEL stability); /* Since 1.1.40 */
 
 G_END_DECLS
 
diff --git a/include/gbinder_types.h b/include/gbinder_types.h
index 56cd664..48f677a 100644
--- a/include/gbinder_types.h
+++ b/include/gbinder_types.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2018-2021 Jolla Ltd.
- * Copyright (C) 2018-2021 Slava Monich <slava.monich@jolla.com>
+ * Copyright (C) 2018-2024 Slava Monich <slava@monich.com>
  *
  * You may use this file under the terms of BSD license as follows:
  *
@@ -178,7 +178,7 @@ typedef enum gbinder_stability_level {
     GBINDER_STABILITY_VENDOR = 0x03,
     GBINDER_STABILITY_SYSTEM = 0x0c,
     GBINDER_STABILITY_VINTF = 0x3f
-} GBINDER_STABILITY_LEVEL;
+} GBINDER_STABILITY_LEVEL; /* Since 1.1.40 */
 
 #define GBINDER_FOURCC(c1,c2,c3,c4) \
     (((c1) << 24) | ((c2) << 16) | ((c3) << 8) | (c4))
diff --git a/src/gbinder_local_object.c b/src/gbinder_local_object.c
index 72b87a1..a3ee2e5 100644
--- a/src/gbinder_local_object.c
+++ b/src/gbinder_local_object.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2018-2022 Jolla Ltd.
- * Copyright (C) 2018-2023 Slava Monich <slava@monich.com>
+ * Copyright (C) 2018-2024 Slava Monich <slava@monich.com>
  *
  * You may use this file under the terms of BSD license as follows:
  *
@@ -615,7 +615,7 @@ gbinder_local_object_handle_release(
 void
 gbinder_local_object_set_stability(
     GBinderLocalObject* self,
-    GBINDER_STABILITY_LEVEL stability)
+    GBINDER_STABILITY_LEVEL stability) /* Since 1.1.40 */
 {
     if (G_LIKELY(self)) {
         self->stability = stability;
diff --git a/unit/unit_local_object/unit_local_object.c b/unit/unit_local_object/unit_local_object.c
index 6ea31b8..dd5cef9 100644
--- a/unit/unit_local_object/unit_local_object.c
+++ b/unit/unit_local_object/unit_local_object.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2023 Slava Monich <slava@monich.com>
+ * Copyright (C) 2018-2024 Slava Monich <slava@monich.com>
  * Copyright (C) 2018-2022 Jolla Ltd.
  *
  * You may use this file under the terms of BSD license as follows:
@@ -140,6 +140,8 @@ test_null(
     gbinder_local_object_handle_decrefs(NULL);
     gbinder_local_object_handle_acquire(NULL, NULL);
     gbinder_local_object_handle_release(NULL);
+    gbinder_local_object_handle_release(NULL);
+    gbinder_local_object_set_stability(NULL, GBINDER_STABILITY_UNDECLARED);
 }
 
 /*==========================================================================*