diff --git a/README.md b/README.md
index b2194af..965e6c1 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ Per-repo wrappers install this package and delegate to `holoscan`, layering on t
 | [HoloHub](https://github.com/nvidia-holoscan/holohub) | `./holohub` | source-project metadata search paths, container/workspace names |
 | [I4H Workflows](https://github.com/isaac-for-healthcare/i4h-workflows) | `./i4h` | RTI DDS license auto-download + mount, TTY serial device passthrough |
 
-Common env vars: `HOLOSCAN_CLI_ROOT` (repo root), `HOLOSCAN_CLI_SEARCH_PATH` (subdirs to scan for `metadata.json`), `HOLOSCAN_CLI_PATH_PREFIX` (placeholder prefix in metadata templates), `HOLOSCAN_CLI_REPO_PREFIX` (container image name prefix). The legacy `HOLOHUB_*` spelling is no longer honored in v1 — set the `HOLOSCAN_CLI_*` names directly. `holoscan env-info` lists every env var the CLI reads in the current shell.
+Common env vars: `HOLOSCAN_CLI_ROOT` (repo root), `HOLOSCAN_CLI_SEARCH_PATH` (subdirs to scan for `metadata.json`), `HOLOSCAN_CLI_PATH_PREFIX` (placeholder prefix in metadata templates), `HOLOSCAN_CLI_REPO_PREFIX` (container image name prefix). The legacy `HOLOHUB_*` spelling is no longer honored since holoscan v4.3.0 — set the `HOLOSCAN_CLI_*` names directly. `holoscan env-info` lists every env var the CLI reads in the current shell.
 
 ## Source layout
 
@@ -149,4 +149,16 @@ the workflow badges at the top of this page.
 
 ### HAP/MAP application packaging
 
-Application packaging (HAP/MAP) is no longer part of this CLI: `holoscan nics` and the `monai-deploy` console script are intentionally not provided. The current `holoscan package` command is for building Holoscan Module distribution artifacts; it is not the legacy HAP/MAP application packager. The pre-v1 `holoscan run` was the HAP/MAP packaged-image runner; in v1 the same name now drives the HoloHub-style source-project runner, so it no longer launches packaged images. Developers that still rely on HAP/MAP packaging should pin `holoscan-cli<=4.2.0`, the last release that shipped that interface, or migrate to the Holoscan SDK packaging workflows directly. See [issue #164](https://github.com/nvidia-holoscan/holoscan-cli/issues/164) for the deprecation timeline.
+Application packaging (HAP/MAP) is no longer part of this CLI: `holoscan nics`
+and the `monai-deploy` console script are intentionally not provided. The current
+`holoscan package` command is for building Holoscan Module distribution artifacts;
+it is not the legacy HAP/MAP application packager. Before holoscan v4.3.0,
+`holoscan run` was the HAP/MAP packaged-image runner; since v4.3.0 the same name
+now drives the HoloHub-style source-project runner, so it no longer launches
+packaged images. Developers that still rely on HAP/MAP packaging should pin both
+`holoscan-cli<=4.2.0`, the last CLI release that shipped that interface, and
+`holoscan<=4.2.0`, because the legacy package command depends on the artifacts
+JSON manifest and was only tested with those SDK versions. Otherwise, migrate to
+the Holoscan SDK packaging workflows directly. See
+[issue #164](https://github.com/nvidia-holoscan/holoscan-cli/issues/164) for the
+deprecation timeline.
diff --git a/src/holoscan_cli/__main__.py b/src/holoscan_cli/__main__.py
index f948b75..baac3b0 100644
--- a/src/holoscan_cli/__main__.py
+++ b/src/holoscan_cli/__main__.py
@@ -44,18 +44,18 @@
 
 LOG_LEVELS = ["DEBUG", "INFO", "WARN", "ERROR", "CRITICAL"]
 
-# Subcommands removed in the source-project v1 cut. Mapped to a one-line note
+# Subcommands removed since holoscan v4.3.0. Mapped to a one-line note
 # explaining what each one did, so users typing the old command get a specific
-# message instead of argparse's generic "invalid choice". Note: the pre-v1
-# `holoscan run` was the HAP/MAP packaged-image runner; in v1 the same name is
-# reused for the HoloHub-style source-project runner, so it is not listed here.
+# message instead of argparse's generic "invalid choice". Note: the pre-4.3.0
+# `holoscan run` was the HAP/MAP packaged-image runner; since v4.3.0 the same
+# name is reused for the HoloHub-style source-project runner, so it is not listed here.
 REMOVED_COMMANDS: dict[str, str] = {
     "nics": "the HAP NIC diagnostic command",
 }
 
 REMOVED_COMMAND_FOOTER = (
-    "Removed HAP/MAP commands are out of scope for holoscan-cli v1. Pin "
-    "holoscan-cli<=4.2.0 if you still need that legacy command surface."
+    "Removed HAP/MAP commands are not available since holoscan v4.3.0. Pin "
+    "holoscan-cli<=4.2.0 and holoscan<=4.2.0 if you still need that legacy command surface."
 )
 
 
@@ -179,7 +179,7 @@ def _exit_if_removed_command(argv: list[str]) -> None:
         return
     program = _program_name(argv)
     print(
-        f"Error: '{program} {command}' was removed in holoscan-cli v1 — "
+        f"Error: '{program} {command}' was removed since holoscan v4.3.0 — "
         f"{REMOVED_COMMANDS[command]} is no longer shipped.\n"
         f"{REMOVED_COMMAND_FOOTER}",
         file=sys.stderr,
diff --git a/tests/unit/test_main.py b/tests/unit/test_main.py
index dbd79f5..3ea89e4 100644
--- a/tests/unit/test_main.py
+++ b/tests/unit/test_main.py
@@ -259,8 +259,9 @@ def test_main_rejects_removed_commands(self, argv, command, capsys):
         # Exit 2 matches argparse's convention for unknown subcommands.
         assert excinfo.value.code == 2
         err = capsys.readouterr().err
-        assert f"'holoscan {command}' was removed" in err
-        assert "Removed HAP/MAP commands are out of scope" in err
+        assert f"'holoscan {command}' was removed since holoscan v4.3.0" in err
+        assert "Removed HAP/MAP commands are not available since holoscan v4.3.0" in err
+        assert "holoscan-cli<=4.2.0 and holoscan<=4.2.0" in err
 
     def test_main_with_log_level(self):
         mock_args = MagicMock()