diff --git a/docker-compose.yml b/docker-compose.yml
index 0d9d1c390819552dbbab483844d69a3eb26e620d..01ad01de420827eb2955e4d89b44b10e53f230b2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.9'
+version: '3.7'
 
 services:
   nginx-memo: