diff --git a/deploy/docker-compose.prod.yml b/deploy/docker-compose.prod.yml
index 69a2dce..3af961b 100644
--- a/deploy/docker-compose.prod.yml
+++ b/deploy/docker-compose.prod.yml
@@ -402,6 +402,11 @@ services:
       continuity-runtime: { condition: service_started }
       commit-runtime: { condition: service_started }
       cognitive-worker-candidate: { condition: service_healthy }
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8084/healthz >/dev/null"]
+      interval: 10s
+      timeout: 5s
+      retries: 20
 
 volumes:
   assistant_pg:
diff --git a/deploy/run-production-canary.sh b/deploy/run-production-canary.sh
index 9ce8ade..1baca2c 100644
--- a/deploy/run-production-canary.sh
+++ b/deploy/run-production-canary.sh
@@ -53,9 +53,9 @@ JSON
 )
 
 stable_json="$(curl -fsS --max-time 10 "$SUPERVISOR_CONTROL_URL/v1/state")"
-stable_set="$(printf '%s' "$stable_json" | python3 -c 'import json,sys; s=json.load(sys.stdin).get("stable_release_set"); print(json.dumps(s,separators=(",",":")) if s else "")')"
+stable_set="$(printf '%s' "$stable_json" | python3 -c "import json,sys; s=json.load(sys.stdin).get('stable_release_set'); print(json.dumps(s,separators=(',',':')) if s else '')")"
 if [[ -z "$stable_set" ]]; then
-  stable_revision="$(printf '%s' "$stable_json" | python3 -c 'import json,sys; print(json.load(sys.stdin).get("current",{}).get("version", "unknown"))')"
+  stable_revision="$(printf '%s' "$stable_json" | python3 -c "import json,sys; print(json.load(sys.stdin).get('current',{}).get('version','unknown'))")"
   stable_set="$(cat <<JSON
 {"id":"stable-$stable_revision","revision":"$stable_revision","components":{
 "creator-web":{"name":"creator-web","revision":"$stable_revision","upstream":"http://creator-web:8084","health_url":"http://creator-web:8084/healthz","ready_url":"http://creator-web:8084/readyz"},
@@ -68,7 +68,7 @@ JSON
 fi
 
 curl -fsS --max-time 10 -X POST "$SUPERVISOR_CONTROL_URL/v1/releases/start-set" -H 'Content-Type: application/json' --data "$release_json" >/dev/null || fail_rollback
-observation="$(printf '%s' "$release_json" | python3 -c 'import json,sys,time; s=json.load(sys.stdin); print(json.dumps({"release_id":s["id"],"ready":True,"reason":"all ReleaseSet healthchecks and image revisions passed","observed_at_unix_millis":int(time.time()*1000),"components":{k:{"revision":v["revision"],"health":True,"ready":True} for k,v in s["components"].items()}},separators=(",",":")))')"
+observation="$(printf '%s' "$release_json" | python3 -c "import json,sys,time; s=json.load(sys.stdin); print(json.dumps({'release_id':s['id'],'ready':True,'reason':'all ReleaseSet healthchecks and image revisions passed','observed_at_unix_millis':int(time.time()*1000),'components':{k:{'revision':v['revision'],'health':True,'ready':True} for k,v in s['components'].items()}},separators=(',',':')))" )"
 curl -fsS --max-time 10 -X POST "$SUPERVISOR_CONTROL_URL/v1/releases/observe-set" -H 'Content-Type: application/json' --data "$observation" >/dev/null || fail_rollback
 control /v1/traffic/canary || fail_rollback