diff --git a/test/testdrive/csv-sources.td b/test/testdrive/csv-sources.td
index 26312f6174d0..64fc6567bd65 100644
--- a/test/testdrive/csv-sources.td
+++ b/test/testdrive/csv-sources.td
@@ -137,7 +137,7 @@ contains:Expected a list of columns in parentheses, found EOF
 # since the definition of "static" means "will never change again".
 $ set-regex match=(\d{13}|u\d{1,3}) replacement=<>
 > EXPLAIN TIMESTAMP FOR SELECT * FROM static_csv
-"     timestamp: <>\n         since:[<>]\n         upper:[]\n     has table: false\n\nsource materialize.public.static_csv (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n"
+"     timestamp: <>\n         since:[<>]\n         upper:[]\n     has table: false\n\nsource materialize.public.mismatched_column_count (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n\nsource materialize.public.matching_column_names (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n\nsource materialize.public.matching_column_names_alias (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n\nsource materialize.public.mismatched_column_names (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n\nsource materialize.public.mismatched_column_names_count (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n\nsource materialize.public.static_csv (<>, storage):\n read frontier:[<>]\nwrite frontier:[]\n"
 
 # Static CSV with manual headers.
 > CREATE SOURCE static_csv_manual_header (city_man, state_man, zip_man)