diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index d9a5e6f..2ea941b 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -2,7 +2,7 @@ version: '3.6'
 
 services:
   app:
-    image: wordpress
+    image: wordpress@sha256:1a758de2f424f735a9f8ad181783a9ed29e028594869a3323903d92532b35102
     restart: always
     ports:
       - 8080:80
@@ -15,7 +15,7 @@ services:
       - ../..:/workspaces:cached
 
   db:
-    image: mariadb
+    image: mariadb@sha256:e0236fc6386e7eacd9359e59d0a078bd7aa0d18280d36d13061121bedeaee903
     restart: unless-stopped
     environment:
       MYSQL_DATABASE: exampledb