diff --git a/internal/financial/engine_test.go b/internal/financial/engine_test.go
index 1e10511..3dcda89 100644
--- a/internal/financial/engine_test.go
+++ b/internal/financial/engine_test.go
@@ -15,7 +15,7 @@ import (
 // testDB creates an in-memory SQLite database with the required schema.
 func testDB(t *testing.T) *sql.DB {
 	t.Helper()
-	db, err := sql.Open("libsql", "file::memory:?cache=shared")
+	db, err := sql.Open("libsql", "file:"+t.Name()+"?mode=memory")
 	if err != nil {
 		t.Fatalf("open test db: %v", err)
 	}