diff --git a/test/expected/hnsw_halfvec.out b/test/expected/hnsw_halfvec.out
index 98bbd43..6924d29 100644
--- a/test/expected/hnsw_halfvec.out
+++ b/test/expected/hnsw_halfvec.out
@@ -100,3 +100,11 @@ SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <+> (SELECT NULL::halfvec)) t
 (1 row)
 
 DROP TABLE t;
+-- dimensions
+CREATE TABLE t (val halfvec(4000));
+CREATE INDEX ON t USING hnsw (val halfvec_l2_ops);
+DROP TABLE t;
+CREATE TABLE t (val halfvec(4001));
+CREATE INDEX ON t USING hnsw (val halfvec_l2_ops);
+ERROR:  column cannot have more than 4000 dimensions for hnsw index
+DROP TABLE t;
diff --git a/test/expected/hnsw_vector.out b/test/expected/hnsw_vector.out
index cb4d8b9..d11268b 100644
--- a/test/expected/hnsw_vector.out
+++ b/test/expected/hnsw_vector.out
@@ -199,3 +199,11 @@ ERROR:  0 is outside the valid range for parameter "hnsw.scan_mem_multiplier" (1
 SET hnsw.scan_mem_multiplier = 1001;
 ERROR:  1001 is outside the valid range for parameter "hnsw.scan_mem_multiplier" (1 .. 1000)
 DROP TABLE t;
+-- dimensions
+CREATE TABLE t (val vector(2000));
+CREATE INDEX ON t USING hnsw (val vector_l2_ops);
+DROP TABLE t;
+CREATE TABLE t (val vector(2001));
+CREATE INDEX ON t USING hnsw (val vector_l2_ops);
+ERROR:  column cannot have more than 2000 dimensions for hnsw index
+DROP TABLE t;
diff --git a/test/expected/ivfflat_halfvec.out b/test/expected/ivfflat_halfvec.out
index 9b85331..4893ad1 100644
--- a/test/expected/ivfflat_halfvec.out
+++ b/test/expected/ivfflat_halfvec.out
@@ -82,3 +82,14 @@ SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> (SELECT NULL::halfvec)) t
 (1 row)
 
 DROP TABLE t;
+-- dimensions
+CREATE TABLE t (val halfvec(4000));
+CREATE INDEX ON t USING ivfflat (val halfvec_l2_ops);
+NOTICE:  ivfflat index created with little data
+DETAIL:  This will cause low recall.
+HINT:  Drop the index until the table has more data.
+DROP TABLE t;
+CREATE TABLE t (val halfvec(4001));
+CREATE INDEX ON t USING ivfflat (val halfvec_l2_ops);
+ERROR:  column cannot have more than 4000 dimensions for ivfflat index
+DROP TABLE t;
diff --git a/test/expected/ivfflat_vector.out b/test/expected/ivfflat_vector.out
index 23e1c01..b5567ef 100644
--- a/test/expected/ivfflat_vector.out
+++ b/test/expected/ivfflat_vector.out
@@ -173,6 +173,17 @@ ERROR:  0 is outside the valid range for parameter "ivfflat.max_probes" (1 .. 32
 SET ivfflat.max_probes = 32769;
 ERROR:  32769 is outside the valid range for parameter "ivfflat.max_probes" (1 .. 32768)
 DROP TABLE t;
+-- dimensions
+CREATE TABLE t (val vector(2000));
+CREATE INDEX ON t USING ivfflat (val vector_l2_ops);
+NOTICE:  ivfflat index created with little data
+DETAIL:  This will cause low recall.
+HINT:  Drop the index until the table has more data.
+DROP TABLE t;
+CREATE TABLE t (val vector(2001));
+CREATE INDEX ON t USING ivfflat (val vector_l2_ops);
+ERROR:  column cannot have more than 2000 dimensions for ivfflat index
+DROP TABLE t;
 -- memory
 CREATE TABLE t (val vector(2000));
 CREATE INDEX ON t USING ivfflat (val vector_l2_ops) WITH (lists = 4096);
diff --git a/test/sql/hnsw_halfvec.sql b/test/sql/hnsw_halfvec.sql
index 89460ad..e4818a6 100644
--- a/test/sql/hnsw_halfvec.sql
+++ b/test/sql/hnsw_halfvec.sql
@@ -56,3 +56,13 @@ SELECT * FROM t ORDER BY val <+> '[3,3,3]';
 SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <+> (SELECT NULL::halfvec)) t2;
 
 DROP TABLE t;
+
+-- dimensions
+
+CREATE TABLE t (val halfvec(4000));
+CREATE INDEX ON t USING hnsw (val halfvec_l2_ops);
+DROP TABLE t;
+
+CREATE TABLE t (val halfvec(4001));
+CREATE INDEX ON t USING hnsw (val halfvec_l2_ops);
+DROP TABLE t;
diff --git a/test/sql/hnsw_vector.sql b/test/sql/hnsw_vector.sql
index a928ba4..a081574 100644
--- a/test/sql/hnsw_vector.sql
+++ b/test/sql/hnsw_vector.sql
@@ -115,3 +115,13 @@ SET hnsw.scan_mem_multiplier = 0;
 SET hnsw.scan_mem_multiplier = 1001;
 
 DROP TABLE t;
+
+-- dimensions
+
+CREATE TABLE t (val vector(2000));
+CREATE INDEX ON t USING hnsw (val vector_l2_ops);
+DROP TABLE t;
+
+CREATE TABLE t (val vector(2001));
+CREATE INDEX ON t USING hnsw (val vector_l2_ops);
+DROP TABLE t;
diff --git a/test/sql/ivfflat_halfvec.sql b/test/sql/ivfflat_halfvec.sql
index 1782452..a81b4ab 100644
--- a/test/sql/ivfflat_halfvec.sql
+++ b/test/sql/ivfflat_halfvec.sql
@@ -43,3 +43,13 @@ SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> '[0,0,0]') t2;
 SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> (SELECT NULL::halfvec)) t2;
 
 DROP TABLE t;
+
+-- dimensions
+
+CREATE TABLE t (val halfvec(4000));
+CREATE INDEX ON t USING ivfflat (val halfvec_l2_ops);
+DROP TABLE t;
+
+CREATE TABLE t (val halfvec(4001));
+CREATE INDEX ON t USING ivfflat (val halfvec_l2_ops);
+DROP TABLE t;
diff --git a/test/sql/ivfflat_vector.sql b/test/sql/ivfflat_vector.sql
index 826f6f8..a7392b3 100644
--- a/test/sql/ivfflat_vector.sql
+++ b/test/sql/ivfflat_vector.sql
@@ -98,6 +98,16 @@ SET ivfflat.max_probes = 32769;
 
 DROP TABLE t;
 
+-- dimensions
+
+CREATE TABLE t (val vector(2000));
+CREATE INDEX ON t USING ivfflat (val vector_l2_ops);
+DROP TABLE t;
+
+CREATE TABLE t (val vector(2001));
+CREATE INDEX ON t USING ivfflat (val vector_l2_ops);
+DROP TABLE t;
+
 -- memory
 
 CREATE TABLE t (val vector(2000));