diff --git a/docker-compose.yml b/docker-compose.yml
index 465b36cd..5855220b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -40,6 +40,8 @@ services:
             test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
             timeout: 10s
             retries: 10
+        tmpfs:
+          - /var/lib/mysql
     mysql2:
         image: mysql:5.7
         environment:
@@ -51,6 +53,8 @@ services:
             test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]
             timeout: 10s
             retries: 10
+        tmpfs:
+          - /var/lib/mysql
     postgres:
         image: postgres:11
         environment: