diff --git a/test/expected/input.out b/test/expected/input.out
index 11226f8..0c094a8 100644
--- a/test/expected/input.out
+++ b/test/expected/input.out
@@ -53,3 +53,5 @@ LINE 1: SELECT '[1,]'::vector;
                ^
 SELECT '[1,2,3]'::vector(2);
 ERROR:  expected 2 dimensions, not 3
+SELECT array_agg(n)::vector FROM generate_series(1, 1025) n;
+ERROR:  vector cannot have more than 1024 dimensions
diff --git a/test/sql/input.sql b/test/sql/input.sql
index 75af74e..e1acd47 100644
--- a/test/sql/input.sql
+++ b/test/sql/input.sql
@@ -13,3 +13,4 @@ SELECT '1,2,3'::vector;
 SELECT '[]'::vector;
 SELECT '[1,]'::vector;
 SELECT '[1,2,3]'::vector(2);
+SELECT array_agg(n)::vector FROM generate_series(1, 1025) n;