diff --git a/README.md b/README.md
index 45880a9..762a72f 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ Have `.env` file at the project directory containing all of the secret values (y
 
 To run `pulsar_data_collector.py`, you need to have a tunnel open to pulsar_dev_proxy so that `ADMIN_URL` env variable points to pulsar admin's port.
 
+Also make sure that NAMESPACE value is correct in .env
+
 and then run either:
 ```
 python3 pulsar_data_collector.py
diff --git a/pulsar_data_collector.py b/pulsar_data_collector.py
index a5d11b3..c05e451 100644
--- a/pulsar_data_collector.py
+++ b/pulsar_data_collector.py
@@ -38,7 +38,8 @@
 ]
 
 TOPIC_NAMES_TO_COLLECT_STORAGE_SIZE = [
-    "hfp/v2"
+    "hfp/v2",
+    "gtfs-rt/feedmessage-vehicleposition"
 ]