diff --git a/Dockerfile b/Dockerfile
index e40ee85..2a1b2af 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-# syntax=docker/dockerfile:1.20.0
-ARG BASE_IMAGE=libops/wp:php83
+# syntax=docker/dockerfile:1.20.0@sha256:26147acbda4f14c5add9946e2fd2ed543fc402884fd75146bd342a7f6271dc1d
+ARG BASE_IMAGE=libops/wp:php83@sha256:3dc10a7bc2044c36b646d5341188b81673a7b34377f8966bbe55a0c054d96659
 FROM ${BASE_IMAGE}
 
 ARG TARGETARCH
diff --git a/docker-compose.override-example.yaml b/docker-compose.override-example.yaml
index 3923e96..227c06e 100644
--- a/docker-compose.override-example.yaml
+++ b/docker-compose.override-example.yaml
@@ -10,7 +10,7 @@ services:
     ports:
       - 3306:3306
   mailpit:
-    image: axllent/mailpit:v1.26
+    image: axllent/mailpit:v1.26@sha256:079759020faa42e243a07aaa3e31086de70e93e78b02b844e4149e0108dd5428
     ports:
       - 1025:1025
       - 8025:8025