diff --git a/postgresql.go b/postgresql.go
index 8c5d46b..3235d7e 100644
--- a/postgresql.go
+++ b/postgresql.go
@@ -31,7 +31,7 @@ func Connect(cfg Config, server string) (db *sql.DB, err error) {
 
 	// connect
 	if cfg.UseElasticAPM {
-		db, err = apmsql.Open("pgx", uri)
+		db, err = apmsql.Open("pgxv4", uri)
 	} else {
 		db, err = sql.Open("pgx", uri)
 	}