diff --git a/deploy/run-production-canary.sh b/deploy/run-production-canary.sh
index 50ad776..9f7756a 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" | jq -c '.stable_release_set // empty')
 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' "$stable_json" | jq -r '.current.version // "unknown"')
   stable_set="$(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 +68,10 @@ 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=$(cat <<JSON
+{"release_id":"candidate-$REVISION","ready":true,"reason":"all ReleaseSet healthchecks and image revisions passed","observed_at_unix_millis":$(date +%s%3N),"components":{"creator-web":{"revision":"$REVISION","health":true,"ready":true},"core-runtime":{"revision":"$REVISION","health":true,"ready":true},"cognitive-worker":{"revision":"$REVISION","health":true,"ready":true},"research-runtime":{"revision":"$REVISION","health":true,"ready":true}}}
+JSON
+)
 curl -fsS --max-time 10 -X POST "$SUPERVISOR_CONTROL_URL/v1/releases/observe-set" -H 'Content-Type: application/json' --data "$observation" >/dev/null || fail_rollback
 control /v1/traffic/canary || fail_rollback