diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 051d1f0..76a4725 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,6 +1,6 @@
 {
     "name": "terraform-plan",
-    "image": "mcr.microsoft.com/vscode/devcontainers/base:bullseye",
+    "image": "mcr.microsoft.com/vscode/devcontainers/base:bullseye@sha256:7c391a762d4ec15a6c279189a03ed3582aa8dadda8300921562cc95ddf100816",
     "features": {
         "node": {
             "version": "20.7.0",