diff --git a/apps/postgres.go b/apps/postgres.go
index 6046eb5..3a007cb 100644
--- a/apps/postgres.go
+++ b/apps/postgres.go
@@ -9,13 +9,13 @@ import (
 )
 
 func Postgres(m Metrics) {
-	out, err := exec.Command("psql", "--version").Output()
+	out, err := exec.Command("pg_config", "--version").Output()
 	if err != nil {
 		log.Printf(">> WARN: Unable to get Postgres version: %v", err)
 		return
 	}
 
-	version := strings.Split(string(out), " ")[2]
+	version := strings.Split(string(out), " ")[1]
 
 	m.Postgres.With(prometheus.Labels{"version": version}).Set(1)
 }