diff --git a/Dockerfile b/Dockerfile
index 72314161b..84cb7f317 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM danlynn/ember-cli:4.11.0@sha256:ec33e1a99bb5bd0b610f33b7e5c7cc09946a94f8d5686746939c82932257e747 AS base
+FROM danlynn/ember-cli:5.8.1@sha256:29f15748caab143af90b23b45228be1f0c1df6e0972b99535f554e75b48b5843 AS base
 
 ARG DEPLOY_TARGET='production'
 ARG BUILD_HASH='unknown'
diff --git a/package.json b/package.json
index e3c07879b..560d18ed9 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "ember-auto-import": "^2.2.4",
     "ember-bootstrap": "^5.1.1",
     "ember-can": "^4.2.0",
-    "ember-cli": "~4.11.0",
+    "ember-cli": "~5.9.0",
     "ember-cli-babel": "^7.26.10",
     "ember-cli-content-security-policy": "^2.0.3",
     "ember-cli-dependency-checker": "^3.2.0",