diff --git a/liquibase/changelog.xml b/liquibase/changelog.xml
index 4175becac..13822937d 100644
--- a/liquibase/changelog.xml
+++ b/liquibase/changelog.xml
@@ -117,6 +117,8 @@
     <include file="changes/feat_1633.sql" relativeToChangelogFile="true"/>
     <!-- Rename gtfs_dataset_changelog (previous, current) dataset columns to (base, new) (issue #1639). -->
     <include file="changes/feat_1639.sql" relativeToChangelogFile="true"/>
+    <!-- Add feed_download/http_headers override for feeds mdb-3237 to mdb-3293 and mdb-2939 -->
+    <include file="changes/hotfix_missing_header.sql" relativeToChangelogFile="true"/>
     <!-- Keep this at the very end to ensure all table and schema changes
          are applied before materialized views are (re)created. -->
     <include file="materialized_views/materialized_views.xml" relativeToChangelogFile="true"/>
diff --git a/liquibase/changes/hotfix_missing_header.sql b/liquibase/changes/hotfix_missing_header.sql
new file mode 100644
index 000000000..4878d27d5
--- /dev/null
+++ b/liquibase/changes/hotfix_missing_header.sql
@@ -0,0 +1,17 @@
+-- Add a custom User-Agent/Referer header override for feeds mdb-3237 through mdb-3293, and mdb-2939,
+-- 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": "Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Mobile Safari/537.36", "Accept-Encoding": "gzip"}'::jsonb,
+    now()
+FROM feed f
+WHERE f.stable_id IN (
+    SELECT 'mdb-' || generate_series(3237, 3293)
+    UNION ALL
+    SELECT 'mdb-2939'
+)
+ON CONFLICT (feed_id, namespace, key) DO NOTHING;