diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index ce6681a..74a70bd 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -3,7 +3,7 @@
 {
 	"name": "Docker in Docker",
 	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
-	"image": "mcr.microsoft.com/devcontainers/base:bullseye",
+	"image": "mcr.microsoft.com/devcontainers/base:bullseye@sha256:931914d4b3b738664c1019daf89ff963ff3840b6284eaaa3fd88eb0afd83d89f",
 
 	"features": {
 		"ghcr.io/devcontainers/features/docker-in-docker:2": {