diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index d9a5e6f..093d9d2 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -2,7 +2,7 @@ version: '3.6'
 
 services:
   app:
-    image: wordpress
+    image: wordpress@sha256:b34b256a51ad9f129121ebd09b7ffefc0451a9241f41d023e9db7befbbf0387f
     restart: always
     ports:
       - 8080:80
@@ -15,7 +15,7 @@ services:
       - ../..:/workspaces:cached
 
   db:
-    image: mariadb
+    image: mariadb@sha256:c006c05608604cf21c9f5b13af3ba7d6ccb3df5bc042c3fe294e0b6d34689b55
     restart: unless-stopped
     environment:
       MYSQL_DATABASE: exampledb