diff --git a/infra/run-domain-check.sh b/infra/run-domain-check.sh
index e99f3fd..7b3ce31 100755
--- a/infra/run-domain-check.sh
+++ b/infra/run-domain-check.sh
@@ -80,8 +80,13 @@ fl_base="http://$(ip "$fl"):8080/flowable-rest/service"
 reg_id="${loc##*/}"
 
 # Extracts the Beoordelen task id for our registration from a Flowable task-query response on stdin.
+# Tolerates an empty/non-JSON body (a transient failure during the poll) by printing nothing.
 task_for_reg() { REG_ID="$reg_id" python3 -c "import os,sys,json
-d=json.load(sys.stdin); rid=os.environ['REG_ID']
+try:
+    d=json.load(sys.stdin)
+except Exception:
+    d={}
+rid=os.environ['REG_ID']
 print(next((t['id'] for t in (d.get('data') or [])
     if any(v.get('name')=='registrationId' and v.get('value')==rid for v in (t.get('processVariables') or []))), ''))"; }
 
@@ -91,7 +96,7 @@ query='{"processDefinitionKey":"registratie","taskDefinitionKey":"Beoordelen","i
 echo ">> polling Flowable for the Beoordelen user task (werkbak)"
 task_id=""
 for _ in $(seq 1 30); do
-  resp="$(flcurl -X POST "$fl_base/runtime/tasks/query" -H 'Content-Type: application/json' -d "$query" 2>/dev/null || true)"
+  resp="$(flcurl -X POST "$fl_base/query/tasks" -H 'Content-Type: application/json' -d "$query" 2>/dev/null || true)"
   task_id="$(printf '%s' "$resp" | task_for_reg)"
   [ -n "$task_id" ] && break
   sleep 2
@@ -108,7 +113,7 @@ flcurl -X POST "$fl_base/runtime/tasks/$task_id" -H 'Content-Type: application/j
   -d '{"action":"complete","variables":[{"name":"besluit","type":"string","value":"goedkeuren"}]}' >/dev/null
 
 echo ">> asserting the process finished (no Beoordelen task remains for the registration)"
-resp="$(flcurl -X POST "$fl_base/runtime/tasks/query" -H 'Content-Type: application/json' -d "$query")"
+resp="$(flcurl -X POST "$fl_base/query/tasks" -H 'Content-Type: application/json' -d "$query")"
 still="$(printf '%s' "$resp" | task_for_reg)"
 [ -z "$still" ] || { echo "FAIL — Beoordelen task $still still active after completion" >&2; exit 1; }
 echo "OK — behandelaar claimed and completed the Beoordelen task; the registratie process finished"
diff --git a/services/domain/Big.Infrastructure/FlowableWorkflowClient.cs b/services/domain/Big.Infrastructure/FlowableWorkflowClient.cs
index 323ede0..597a6e6 100644
--- a/services/domain/Big.Infrastructure/FlowableWorkflowClient.cs
+++ b/services/domain/Big.Infrastructure/FlowableWorkflowClient.cs
@@ -62,7 +62,7 @@ public sealed class FlowableWorkflowClient(HttpClient http, FlowableOptions opti
         var request = new TaskQueryRequest(ProcessDefinitionKey, BeoordelenTaskKey, IncludeProcessVariables: true);
 
         var page = await PostAsync<TaskQueryRequest, TaskQueryResult>(
-            "service/runtime/tasks/query", request, ct);
+            "service/query/tasks", request, ct);
 
         var tasks = page?.Data ?? [];
         return [.. tasks.Select(t => new BeoordelingTask(t.Id, RegistrationId.Parse(t.RegistrationId())))];
diff --git a/services/domain/Big.Tests/FlowableWorkflowClientTests.cs b/services/domain/Big.Tests/FlowableWorkflowClientTests.cs
index b36b13e..3262506 100644
--- a/services/domain/Big.Tests/FlowableWorkflowClientTests.cs
+++ b/services/domain/Big.Tests/FlowableWorkflowClientTests.cs
@@ -167,7 +167,7 @@ public class FlowableWorkflowClientTests
         Assert.Equal("task-1", task.TaskId);
         Assert.Equal(rid, task.RegistrationId);
         Assert.Equal(HttpMethod.Post, capture.Seen!.Method);
-        Assert.Equal("http://flowable/flowable-rest/service/runtime/tasks/query",
+        Assert.Equal("http://flowable/flowable-rest/service/query/tasks",
             capture.Seen.RequestUri!.ToString());
         Assert.Equal("rest-admin:test", DecodeBasic(capture.Seen));
         Assert.Contains("\"processDefinitionKey\":\"registratie\"", capture.Body);