diff --git a/src/govoplan_audit/backend/manifest.py b/src/govoplan_audit/backend/manifest.py
index 926abc9..e0a62b2 100644
--- a/src/govoplan_audit/backend/manifest.py
+++ b/src/govoplan_audit/backend/manifest.py
@@ -9,6 +9,7 @@ from govoplan_core.core.access import (
 )
 from govoplan_core.core.module_guards import drop_table_retirement_provider, persistent_table_uninstall_guard
 from govoplan_core.core.modules import FrontendModule, MigrationSpec, ModuleContext, ModuleManifest
+from govoplan_core.core.events import CAPABILITY_PLATFORM_EVENT_OUTBOX
 from govoplan_core.core.views import ViewSurface
 from govoplan_core.db.base import Base
 
@@ -34,6 +35,13 @@ def _audit_retention(context: ModuleContext):
     return SqlAuditRetentionProvider()
 
 
+def _event_outbox(context: ModuleContext):
+    del context
+    from govoplan_audit.backend.outbox import SqlAuditOutbox
+
+    return SqlAuditOutbox()
+
+
 manifest = ModuleManifest(
     id="audit",
     name="Audit",
@@ -61,6 +69,7 @@ manifest = ModuleManifest(
     capability_factories={
         CAPABILITY_AUDIT_RECORDER: _audit_recorder,
         CAPABILITY_AUDIT_RETENTION: _audit_retention,
+        CAPABILITY_PLATFORM_EVENT_OUTBOX: _event_outbox,
     },
 )
 
diff --git a/src/govoplan_audit/backend/outbox.py b/src/govoplan_audit/backend/outbox.py
index f32637e..a3be871 100644
--- a/src/govoplan_audit/backend/outbox.py
+++ b/src/govoplan_audit/backend/outbox.py
@@ -36,7 +36,6 @@ class SqlAuditOutbox:
             status="pending",
         )
         db.add(item)
-        db.flush()
         return item
 
     def dispatch_pending(
@@ -55,6 +54,7 @@ class SqlAuditOutbox:
                 or_(AuditOutboxEvent.next_attempt_at.is_(None), AuditOutboxEvent.next_attempt_at <= now),
             )
             .order_by(AuditOutboxEvent.created_at.asc(), AuditOutboxEvent.id.asc())
+            .with_for_update(skip_locked=True)
             .limit(max(1, min(int(limit), 500)))
             .all()
         )
diff --git a/webui/package.json b/webui/package.json
index b04b0ae..cc92912 100644
--- a/webui/package.json
+++ b/webui/package.json
@@ -17,7 +17,7 @@
     "lucide-react": "^1.23.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
-    "react-router-dom": "^7.1.1"
+    "react-router-dom": ">=7.18.2 <8"
   },
   "peerDependenciesMeta": {
     "@govoplan/core-webui": {