diff --git a/package.json b/package.json
index bf03bc6..ccaeaed 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "@auth0/auth0-spa-js": "^1.20.1",
     "@types/chart.js": "^2.9.37",
     "@types/elm": "^0.19.1",
-    "chart.js": "^3.7.1",
+    "chart.js": "^4.2.1",
     "elm": "^0.19.1-5",
     "elm-review": "^2.7.1",
     "elm-test": "^0.19.1-revision7"
@@ -54,7 +54,7 @@
     "@types/elm": "^0.19.1",
     "@typescript-eslint/eslint-plugin": "^5.17.0",
     "@typescript-eslint/parser": "^5.17.0",
-    "chart.js": "^3.7.1",
+    "chart.js": "^4.2.1",
     "eslint": "^8.18.0",
     "prettier": "^2.7.1",
     "typescript": "^4.7.4"
diff --git a/yarn.lock b/yarn.lock
index 089352b..dff4cd6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -430,6 +430,11 @@
   resolved "https://registry.yarnpkg.com/@humanwhocodes/object-schema/-/object-schema-1.2.1.tgz#b520529ec21d8e5945a1851dfd1c32e94e39ff45"
   integrity sha512-ZnQMnLV4e7hDlUvw8H+U8ASL02SS2Gn6+9Ac3wGGLIe7+je2AeAOxPY+izIPJDfFDb7eDjev0Us8MO1iFRN8hA==
 
+"@kurkle/color@^0.3.0":
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/@kurkle/color/-/color-0.3.2.tgz#5acd38242e8bde4f9986e7913c8fdf49d3aa199f"
+  integrity sha512-fuscdXJ9G1qb7W8VdHi+IwRqij3lBkosAm4ydQtEmbY58OzHXqQhvlxqEkoz0yssNVn38bcpRWgA9PP+OGoisw==
+
 "@nodelib/fs.scandir@2.1.5":
   version "2.1.5"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz#7619c2eb21b25483f6d167548b4cfd5a7488c3d5"
@@ -711,10 +716,12 @@ chalk@^4.0.0, chalk@^4.1.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
-chart.js@^3.7.1:
-  version "3.8.0"
-  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-3.8.0.tgz#c6c14c457b9dc3ce7f1514a59e9b262afd6f1a94"
-  integrity sha512-cr8xhrXjLIXVLOBZPkBZVF6NDeiVIrPLHcMhnON7UufudL+CNeRrD+wpYanswlm8NpudMdrt3CHoLMQMxJhHRg==
+chart.js@^4.2.1:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-4.2.1.tgz#d2bd5c98e9a0ae35408975b638f40513b067ba1d"
+  integrity sha512-6YbpQ0nt3NovAgOzbkSSeeAQu/3za1319dPUQTXn9WcOpywM8rGKxJHrhS8V8xEkAlk8YhEfjbuAPfUyp6jIsw==
+  dependencies:
+    "@kurkle/color" "^0.3.0"
 
 cliui@^7.0.2:
   version "7.0.4"