diff --git a/Dockerfile b/Dockerfile
index faef76c..e69f9c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ RUN microdnf install -y git && microdnf clean all
 # requirements file so the [flow_doctor]-only install above isn't
 # overridden by the [arcticdb,flow_doctor,rag] extras pinned for EC2.
 COPY requirements.txt ${LAMBDA_TASK_ROOT}/
-RUN pip install --no-cache-dir "alpha-engine-lib[flow_doctor] @ git+https://github.com/cipher813/alpha-engine-lib@v0.20.0" && \
+RUN pip install --no-cache-dir "alpha-engine-lib[flow_doctor] @ git+https://github.com/cipher813/alpha-engine-lib@v0.21.0" && \
     grep -vE "^#|^$|^pytest|^python-dotenv|^boto3|^botocore|^s3transfer|^alpha-engine-lib" requirements.txt > /tmp/req-lambda.txt && \
     pip install --no-cache-dir -r /tmp/req-lambda.txt && \
     rm -rf /root/.cache/pip /tmp/req-lambda.txt
diff --git a/infrastructure/lambdas/changelog-incident-mirror/deploy.sh b/infrastructure/lambdas/changelog-incident-mirror/deploy.sh
index 8745585..06a3634 100755
--- a/infrastructure/lambdas/changelog-incident-mirror/deploy.sh
+++ b/infrastructure/lambdas/changelog-incident-mirror/deploy.sh
@@ -102,15 +102,29 @@ aws lambda wait function-updated \
 echo "✓ Deployed."
 
 # Smoke test: publish a single SNS message and verify the entry lands.
+# Migrated 2026-05-20 (ROADMAP L146) from raw ``aws sns publish`` to the
+# canonical ``alpha_engine_lib.alerts`` primitive (v0.21.0, lib #52).
+# Skips Telegram on purpose: this is a deliberate deploy smoke test, not
+# a real failure event, and a per-deploy operator ping would be noise.
+# SNS path stays identical (same default topic `alpha-engine-alerts`),
+# so the changelog-incident-mirror Lambda still sees the message.
 SMOKE_ARG="${1:-}"
 if [[ "${SMOKE_ARG}" == "--smoke" ]]; then
-  echo "Smoke-testing via SNS publish..."
+  echo "Smoke-testing via alerts.publish (SNS-only, severity=info)..."
   TS=$(date -u +%s)
-  aws sns publish \
-    --topic-arn "arn:aws:sns:${REGION}:711398986525:alpha-engine-alerts" \
-    --subject "deploy.sh smoke test ${TS}" \
-    --message "Verifying changelog-incident-mirror after deploy ${TS}" \
-    --query 'MessageId' --output text >/dev/null
+  # Resolve Python with alpha_engine_lib installed — prefer repo-local
+  # .venv, fall back to system python3 (mirrors the alpha-engine
+  # health_checker.sh pattern).
+  _alert_python="python3"
+  if [ -x "$(dirname "$0")/../../../.venv/bin/python" ]; then
+    _alert_python="$(dirname "$0")/../../../.venv/bin/python"
+  fi
+  "$_alert_python" -m alpha_engine_lib.alerts publish \
+    --severity info \
+    --no-telegram \
+    --source alpha-engine-data/changelog-incident-mirror/deploy.sh \
+    --message "deploy.sh smoke test ${TS}: Verifying changelog-incident-mirror after deploy" \
+    > /dev/null
   echo "  → Published. Entry should land in s3://alpha-engine-research/changelog/entries/ within ~3s."
   echo "  → Check with: aws s3 ls s3://alpha-engine-research/changelog/entries/$(date -u +%Y-%m-%d)/ --recursive | tail"
 fi
diff --git a/requirements.txt b/requirements.txt
index a64ce73..e60597b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,4 +15,4 @@ arcticdb>=6.11
 # flow-doctor is pulled in transitively via alpha-engine-lib[flow_doctor].
 # psycopg2-binary + pgvector now come via [rag] (added in lib v0.3.0,
 # direct pins dropped 2026-05-20 after >2-week soak on v0.20.0).
-alpha-engine-lib[arcticdb,flow_doctor,rag] @ git+https://github.com/cipher813/alpha-engine-lib@v0.20.0
+alpha-engine-lib[arcticdb,flow_doctor,rag] @ git+https://github.com/cipher813/alpha-engine-lib@v0.21.0