diff --git a/cli/src/etos_client/etos/v1alpha/test_run/test_run.py b/cli/src/etos_client/etos/v1alpha/test_run/test_run.py
index 8fb0b815..ad1256b7 100644
--- a/cli/src/etos_client/etos/v1alpha/test_run/test_run.py
+++ b/cli/src/etos_client/etos/v1alpha/test_run/test_run.py
@@ -21,11 +21,23 @@
 from typing import Union
 from pathlib import Path
 
-from etos_lib.messaging.events import Message, Report, Artifact, Shutdown
+#from etos_lib.messaging.events import Message, Report, Artifact, Shutdown  # import disabled due to: https://github.com/eiffel-community/etos/issues/417
 from etos_client.sse.v2alpha.client import SSEClient
 from etos_client.shared.downloader import Downloader, Downloadable
 from ..schema.response import ResponseSchema
 
+# dummy classes: remove when the etos_lib.messaging module is available: https://github.com/eiffel-community/etos/issues/417
+class Artifact:
+    pass
+
+class Message:
+    pass
+
+class Report:
+    pass
+
+class Shutdown:
+    pass
 
 class TestRun:
     """Track an ETOS test run and log relevant information."""
diff --git a/cli/src/etos_client/sse/v2alpha/client.py b/cli/src/etos_client/sse/v2alpha/client.py
index 3037b56c..b5f4d5da 100644
--- a/cli/src/etos_client/sse/v2alpha/client.py
+++ b/cli/src/etos_client/sse/v2alpha/client.py
@@ -24,7 +24,11 @@
 from urllib3.poolmanager import PoolManager
 from urllib3.util import Retry
 
-from etos_lib.messaging.events import Shutdown, Event, parse
+#from etos_lib.messaging.events import Shutdown, Event, parse # import disabled due to: https://github.com/eiffel-community/etos/issues/417
+# dummy class: remove when the etos_lib.messaging module is available
+class Event:
+    pass
+
 
 CHUNK_SIZE = 500
 RETRIES = Retry(
diff --git a/cli/src/etos_debug/command.py b/cli/src/etos_debug/command.py
index 0d21fb20..a1d4bbf0 100644
--- a/cli/src/etos_debug/command.py
+++ b/cli/src/etos_debug/command.py
@@ -20,13 +20,26 @@
 import logging
 
 from etos_lib.lib.http import Http
-from etos_lib.messaging.events import Artifact, Message, Report, Shutdown
+#from etos_lib.messaging.events import Artifact, Message, Report, Shutdown  # import disabled due to: https://github.com/eiffel-community/etos/issues/417
 from urllib3.util import Retry
 from requests.exceptions import HTTPError
 from etosctl.command import Command
 from etosctl.models import CommandMeta
 from etos_client.sse.v2alpha.client import SSEClient
 
+# dummy classes: remove when the etos_lib.messaging module is available: https://github.com/eiffel-community/etos/issues/417
+class Artifact:
+    pass
+
+class Message:
+    pass
+
+class Report:
+    pass
+
+class Shutdown:
+    pass
+
 LOGGER = logging.getLogger(__name__)
 # Max total time for a ping request including delays with backoff factor 0.5 will be:
 # 0.5 + 1.5 + 3.5 + 7.5 + 15.5 = 28.5 (seconds)