diff --git a/laborious/worker/worker.py b/laborious/worker/worker.py
index edd7e2f..f284a8c 100644
--- a/laborious/worker/worker.py
+++ b/laborious/worker/worker.py
@@ -141,10 +141,19 @@ async def main():
         metrics_controller=metrics_controller,
     )
 
+    if runtime == 'legacy':
+        to_install_runtime = 'single'
+    else:
+        to_install_runtime = runtime
+
     try:
-        await plugin_store.install_runtime(runtime_name=runtime, metadata=metadata_runtime)
+        await plugin_store.install_runtime(
+            runtime_name=to_install_runtime, metadata=metadata_runtime
+        )
     except Exception as exc:
-        logger.custom_critical(f'Failed to install runtime {runtime}: {exc}', metadata_runtime)
+        logger.custom_critical(
+            f'Failed to install runtime {to_install_runtime}: {exc}', metadata_runtime
+        )
         metrics.APP_UP.labels(pod_id=POD_ID).set(0)
         sys.exit(1)
 
@@ -207,6 +216,7 @@ async def main():
                 activities.export_data_to_postgres,
             ],
             logger=logger,
+            runtime='core',
         ),
         prepare_worker(
             temporal_client=temporal_client,
@@ -219,6 +229,7 @@ async def main():
                 activities.export_data_to_postgres,
             ],
             logger=logger,
+            runtime='core',
         ),
         prepare_worker(
             temporal_client=temporal_client,