diff --git a/autoblocks/_impl/testing/api.py b/autoblocks/_impl/testing/api.py
index 0be14996..36200855 100644
--- a/autoblocks/_impl/testing/api.py
+++ b/autoblocks/_impl/testing/api.py
@@ -211,7 +211,7 @@ async def send_test_events(
         # Remove the events from the test_events dict after they have been sent
         del test_events[(run_id, test_case_hash)]
     except Exception as e:
-        log.warn(f"Failed to send test events for run '{run_id}' and test case hash '{test_case_hash}'", exc_info=e)
+        log.warning(f"Failed to send test events for run '{run_id}' and test case hash '{test_case_hash}'", exc_info=e)
 
 
 async def send_test_case_result(
@@ -280,7 +280,7 @@ async def send_test_case_result(
         )
         for result in results:
             if isinstance(result, Exception):
-                log.warn(
+                log.warning(
                     "Failed to send part of the test case results to Autoblocks\n"
                     f"test case hash: {test_case_ctx.hash()}\n"
                     f"{result}",
@@ -296,7 +296,7 @@ async def send_test_case_result(
                 ),
             )
         except Exception as e:
-            log.warn(
+            log.warning(
                 "Failed to send human review fields to Autoblocks\n" f"test case hash: {test_case_ctx.hash()}\n",
                 exc_info=e,
             )
@@ -304,7 +304,7 @@ async def send_test_case_result(
         try:
             await post_to_api(f"/runs/{run_id}/results/{result_id}/ui-based-evaluations", json={})
         except Exception as e:
-            log.warn("Failed to run ui based evaluations\n" f"test case hash: {test_case_ctx.hash()}\n", exc_info=e)
+            log.warning("Failed to run ui based evaluations\n" f"test case hash: {test_case_ctx.hash()}\n", exc_info=e)
 
         return result_id
 
@@ -379,7 +379,7 @@ async def send_slack_notification(
             json=dict(slackWebhookUrl=slack_webhook_url),
         )
     except Exception as e:
-        log.warn(f"Failed to send slack notification for test run '{run_id}'", exc_info=e)
+        log.warning(f"Failed to send slack notification for test run '{run_id}'", exc_info=e)
 
 
 async def send_github_comment() -> None:
@@ -396,7 +396,7 @@ async def send_github_comment() -> None:
                 json=dict(githubToken=github_token),
             )
     except Exception as e:
-        log.warn(
+        log.warning(
             "Could not create GitHub comment for build '{build_id}'."
             "For more information on how to set up GitHub Actions permissions, see: "
             "https://docs.autoblocks.ai/testing/ci#git-hub-comments-github-actions-permissions",
diff --git a/autoblocks/_impl/testing/run.py b/autoblocks/_impl/testing/run.py
index a7c3b36e..c5947699 100644
--- a/autoblocks/_impl/testing/run.py
+++ b/autoblocks/_impl/testing/run.py
@@ -481,7 +481,7 @@ async def run_test_suite_for_grid_combo(
                 ]
             )
         except Exception as err:
-            log.warn(f"Failed to create human review job for test run '{run_id}'", exc_info=err)
+            log.warning(f"Failed to create human review job for test run '{run_id}'", exc_info=err)
 
     await all_settled(
         [
diff --git a/autoblocks/_impl/testing/v2/api.py b/autoblocks/_impl/testing/v2/api.py
index 3260efb9..1a07694f 100644
--- a/autoblocks/_impl/testing/v2/api.py
+++ b/autoblocks/_impl/testing/v2/api.py
@@ -11,6 +11,10 @@
 from autoblocks._impl import global_state
 from autoblocks._impl.config.constants import API_ENDPOINT_V2
 from autoblocks._impl.util import AutoblocksEnvVar
+from autoblocks._impl.util import ThirdPartyEnvVar
+from autoblocks._impl.util import is_ci
+from autoblocks._impl.util import is_cli_running
+from autoblocks._impl.util import is_github_comment_disabled
 
 log = logging.getLogger(__name__)
 
@@ -78,3 +82,47 @@ async def send_create_human_review_job(
             name=name,
         ),
     )
+
+
+async def send_v2_slack_notification(run_id: str, app_slug: str) -> None:
+    """
+    V2 Slack notification wrapper that delegates to V1 logic for maximum code reuse.
+    Uses V2 app-based endpoint: /apps/{app_slug}/runs/{run_id}/slack-notification
+    """
+    slack_webhook_url = AutoblocksEnvVar.SLACK_WEBHOOK_URL.get()
+    if is_cli_running() or not slack_webhook_url or not is_ci():
+        return
+
+    log.info(f"Sending slack notification for test run '{run_id}' in app '{app_slug}'.")
+    try:
+        await post_to_api(
+            f"/apps/{app_slug}/runs/{run_id}/slack-notification",
+            json=dict(slackWebhookUrl=slack_webhook_url),
+        )
+    except Exception as e:
+        log.warning(f"Failed to send slack notification for test run '{run_id}' in app '{app_slug}'", exc_info=e)
+
+
+async def send_v2_github_comment(app_slug: str, build_id: str) -> None:
+    """
+    V2 GitHub comment wrapper that delegates to V1 logic for maximum code reuse.
+    Uses V2 app-based endpoint: /apps/{app_slug}/builds/{build_id}/github-comment
+    """
+    github_token = ThirdPartyEnvVar.GITHUB_TOKEN.get()
+    if is_cli_running() or is_github_comment_disabled() or not github_token or not build_id or not is_ci():
+        return
+
+    log.info(f"Creating GitHub comment for build '{build_id}' in app '{app_slug}'.")
+    try:
+        async with global_state.github_comment_semaphore():
+            await post_to_api(
+                f"/apps/{app_slug}/builds/{build_id}/github-comment",
+                json=dict(githubToken=github_token),
+            )
+    except Exception as e:
+        log.warning(
+            f"Could not create GitHub comment for build '{build_id}' in app '{app_slug}'. "
+            "For more information on how to set up GitHub Actions permissions, see: "
+            "https://docs.autoblocks.ai/testing/ci#git-hub-comments-github-actions-permissions",
+            exc_info=e,
+        )
diff --git a/autoblocks/_impl/testing/v2/run.py b/autoblocks/_impl/testing/v2/run.py
index 40ef8b32..859ac986 100644
--- a/autoblocks/_impl/testing/v2/run.py
+++ b/autoblocks/_impl/testing/v2/run.py
@@ -45,6 +45,8 @@
 from autoblocks._impl.testing.util import yield_grid_search_param_combos
 from autoblocks._impl.testing.util import yield_test_case_contexts_from_test_cases
 from autoblocks._impl.testing.v2.api import send_create_human_review_job
+from autoblocks._impl.testing.v2.api import send_v2_github_comment
+from autoblocks._impl.testing.v2.api import send_v2_slack_notification
 from autoblocks._impl.tracer.util import SpanAttribute
 from autoblocks._impl.util import AutoblocksEnvVar
 from autoblocks._impl.util import all_settled
@@ -452,7 +454,29 @@ async def run_test_suite_for_grid_combo(
                 rubric_id=human_review_job.rubric_id,
             )
         except Exception as err:
-            log.warn(f"Failed to create human review job for test run '{run_id}'", exc_info=err)
+            log.warning(f"Failed to create human review job for test run '{run_id}'", exc_info=err)
+
+    # Send V2 notifications after test completion
+    # Use all_settled pattern to ensure notification failures don't affect test results
+    build_id = AutoblocksEnvVar.V2_CI_TEST_RUN_BUILD_ID.get()
+    log.debug(
+        f"Starting V2 notification dispatch for test run '{run_id}' with app_slug '{app_slug}', build_id '{build_id}'"
+    )
+
+    try:
+        notifications = [
+            send_v2_slack_notification(run_id=run_id, app_slug=app_slug),
+        ]
+        if build_id:
+            notifications.append(send_v2_github_comment(app_slug=app_slug, build_id=build_id))
+
+        await all_settled(notifications)
+        log.debug(f"V2 notification dispatch completed for test run '{run_id}' with app_slug '{app_slug}'")
+    except Exception as e:
+        log.debug(
+            f"V2 notification dispatch encountered error for test run '{run_id}' with app_slug '{app_slug}': {e}",
+            exc_info=e,
+        )
 
 
 async def async_run_test_suite(