diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index d9a5e6f..2e454ac 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -2,7 +2,7 @@ version: '3.6'
 
 services:
   app:
-    image: wordpress
+    image: wordpress@sha256:087e3484fae01cdf1e3d72d2de89402e7fb9c495d86578d923af92ac46be6a92
     restart: always
     ports:
       - 8080:80
@@ -15,7 +15,7 @@ services:
       - ../..:/workspaces:cached
 
   db:
-    image: mariadb
+    image: mariadb@sha256:f54db0cb3ccfe9431aba6d08c65a1763c499789b116b4cb651dd7fcf325965b3
     restart: unless-stopped
     environment:
       MYSQL_DATABASE: exampledb