diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index d9a5e6f..8d7a426 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -2,7 +2,7 @@ version: '3.6'
 
 services:
   app:
-    image: wordpress
+    image: wordpress@sha256:6301205c75c06e393635ff78c78ada230da15352ee03b9cb60a623ee2667bb55
     restart: always
     ports:
       - 8080:80
@@ -15,7 +15,7 @@ services:
       - ../..:/workspaces:cached
 
   db:
-    image: mariadb
+    image: mariadb@sha256:b1c7bf836e64ed9406a8984af29509f40089d55cea14b32f12c4726a1f17104b
     restart: unless-stopped
     environment:
       MYSQL_DATABASE: exampledb