diff --git a/docker-compose.yml b/docker-compose.yml
index 35e84dc..6fd2575 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -58,7 +58,7 @@ services:
       - flask
   # backend postgres
   postgres:
-    image: postgres
+    image: postgres:13
     container_name: postgres
     restart: always
     volumes: