diff --git a/README.md b/README.md
index 270714e..e10cb52 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,7 @@ services:
       db:
         condition: service_healthy
   db:
-    image: postgres:15
+    image: groonga/pgroonga
     container_name: teldrive_db
     restart: always
     environment:
diff --git a/docker-compose.postgres.yml b/docker-compose.postgres.yml
index 3b673fe..8980e04 100644
--- a/docker-compose.postgres.yml
+++ b/docker-compose.postgres.yml
@@ -15,7 +15,7 @@ services:
       db:
         condition: service_healthy
   db:
-    image: postgres:15
+    image: groonga/pgroonga
     container_name: teldrive_db
     restart: always
     environment:
diff --git a/internal/database/migrations/20240711163538_search.sql b/internal/database/migrations/20240711163538_search.sql
new file mode 100644
index 0000000..ae05e86
--- /dev/null
+++ b/internal/database/migrations/20240711163538_search.sql
@@ -0,0 +1,8 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE EXTENSION IF NOT EXISTS pgroonga;
+DROP INDEX IF EXISTS teldrive.name_search_idx;
+DROP FUNCTION IF EXISTS  teldrive.get_tsquery;
+DROP FUNCTION IF EXISTS teldrive.get_tsvector;
+CREATE INDEX name_search_idx ON teldrive.files USING pgroonga (REGEXP_REPLACE(name, '[.,-_]', ' ', 'g')) WITH (tokenizer = 'TokenNgram');
+-- +goose StatementEnd
\ No newline at end of file
diff --git a/pkg/services/file.go b/pkg/services/file.go
index 133e81d..6ef7826 100644
--- a/pkg/services/file.go
+++ b/pkg/services/file.go
@@ -261,7 +261,7 @@ func (fs *FileService) ListFiles(userId int64, fquery *schemas.FileQuery) (*sche
 		}
 
 		if fquery.Query != "" {
-			query.Where("teldrive.get_tsquery(?) @@ teldrive.get_tsvector(name)", fquery.Query)
+			query.Where("name &@~ REGEXP_REPLACE(?, '[.,-_]', ' ', 'g')", fquery.Query)
 		}
 
 		if fquery.Category != "" {