diff --git a/liquibase/changelog.xml b/liquibase/changelog.xml
index d39adec6d..e9c53256e 100644
--- a/liquibase/changelog.xml
+++ b/liquibase/changelog.xml
@@ -148,6 +148,8 @@
     <include file="changes/add_byron_bay_header.sql" relativeToChangelogFile="true"/>
     <!-- Add feed_download/http_headers override for feed tld-716 -->
     <include file="changes/add_metro_lisboa_header.sql" relativeToChangelogFile="true"/>
+    <!-- Add feed_download/http_headers override for feed mdb-2433 -->
+    <include file="changes/add_avon_transit_header.sql" relativeToChangelogFile="true"/>
     <!-- Keep this after all source table and schema changes so materialized views
          are recreated from the final source schema. -->
     <include file="materialized_views/materialized_views.xml" relativeToChangelogFile="true"/>
diff --git a/liquibase/changes/add_avon_transit_header.sql b/liquibase/changes/add_avon_transit_header.sql
new file mode 100644
index 000000000..74346c1e2
--- /dev/null
+++ b/liquibase/changes/add_avon_transit_header.sql
@@ -0,0 +1,13 @@
+-- Add a custom User-Agent/Referer header override for feeds mdb-2433
+-- whose producer blocks the default download headers.
+INSERT INTO config_value_feed (feed_id, feed_stable_id, namespace, key, value, updated_at)
+SELECT
+    f.id,
+    f.stable_id,
+    'feed_download',
+    'http_headers',
+    '{"Accept": "*/*", "User-Agent": "MobilityDatabaseAgent"}'::jsonb,
+    now()
+FROM feed f
+WHERE f.stable_id='mdb-2433'
+ON CONFLICT (feed_id, namespace, key) DO NOTHING;