diff --git a/go.mod b/go.mod
index 2469925..236e09f 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.21
 
 require (
 	github.com/RoaringBitmap/roaring/v2 v2.4.5
-	github.com/blevesearch/bleve_index_api v1.2.10
+	github.com/blevesearch/bleve_index_api v1.2.11
 )
 
 require (
diff --git a/go.sum b/go.sum
index f27012b..d252f9d 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,8 @@ github.com/RoaringBitmap/roaring/v2 v2.4.5 h1:uGrrMreGjvAtTBobc0g5IrW1D5ldxDQYe2
 github.com/RoaringBitmap/roaring/v2 v2.4.5/go.mod h1:FiJcsfkGje/nZBZgCu0ZxCPOKD/hVXDS2dXi7/eUFE0=
 github.com/bits-and-blooms/bitset v1.12.0 h1:U/q1fAF7xXRhFCrhROzIfffYnu+dlS38vCZtmFVPHmA=
 github.com/bits-and-blooms/bitset v1.12.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
-github.com/blevesearch/bleve_index_api v1.2.10 h1:FMFmZCmTX6PdoLLvwUnKF2RsmILFFwO3h0WPevXY9fE=
-github.com/blevesearch/bleve_index_api v1.2.10/go.mod h1:rKQDl4u51uwafZxFrPD1R7xFOwKnzZW7s/LSeK4lgo0=
+github.com/blevesearch/bleve_index_api v1.2.11 h1:bXQ54kVuwP8hdrXUSOnvTQfgK0KI1+f9A0ITJT8tX1s=
+github.com/blevesearch/bleve_index_api v1.2.11/go.mod h1:rKQDl4u51uwafZxFrPD1R7xFOwKnzZW7s/LSeK4lgo0=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
diff --git a/segment_vector.go b/segment_vector.go
index a57e0b4..7e50ce4 100644
--- a/segment_vector.go
+++ b/segment_vector.go
@@ -20,6 +20,7 @@ package segment
 import (
 	"encoding/json"
 
+	index "github.com/blevesearch/bleve_index_api"
 	"github.com/RoaringBitmap/roaring/v2"
 )
 
@@ -64,6 +65,8 @@ type VectorIndex interface {
 		params json.RawMessage) (VecPostingsList, error)
 	Close()
 	Size() uint64
+
+	ObtainKCentroidCardinalitiesFromIVFIndex(limit int, descending bool) ([]index.CentroidCardinality, error)
 }
 
 type VectorSegment interface {