diff --git a/day4/front/package-lock.json b/day4/front/package-lock.json
index 54dc9e1..f687ee0 100644
--- a/day4/front/package-lock.json
+++ b/day4/front/package-lock.json
@@ -5221,9 +5221,9 @@
       "dev": true
     },
     "highcharts": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/highcharts/-/highcharts-8.0.1.tgz",
-      "integrity": "sha512-qxEJQIk/G8tPt8crGsuXRjE0apJG4LBZxDmzTklpUvoQU12VG9fRnOlPOqGfuVl0Pz+GibVLWrJRAU3HpB2wuw=="
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/highcharts/-/highcharts-9.0.0.tgz",
+      "integrity": "sha512-MJCtidFytGSQvsV3OEM+vFTLpjUcp7jmFpLn8h3oL4WKp0gxUOQg6Nw00sqMWGdiadst0gOZO4804zynTcYjZQ=="
     },
     "highcharts-vue": {
       "version": "1.3.5",
diff --git a/day4/front/package.json b/day4/front/package.json
index a50887b..eef8dea 100644
--- a/day4/front/package.json
+++ b/day4/front/package.json
@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "axios": "^0.19.2",
-    "highcharts": "^8.0.1",
+    "highcharts": "^9.0.0",
     "highcharts-vue": "^1.3.5",
     "vue": "^2.6.11"
   },