diff --git a/app/package-lock.json b/app/package-lock.json
index 4e5fa936..a4fd18da 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -13,7 +13,7 @@
         "@tailwindcss/vite": "^4.0.15",
         "@types/geojson": "^7946.0.10",
         "axios": "^1.6.5",
-        "date-fns": "^3.3.1",
+        "date-fns": "^4.1.0",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "react-rnd": "^10.4.1",
@@ -5114,9 +5114,9 @@
       }
     },
     "node_modules/date-fns": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-3.6.0.tgz",
-      "integrity": "sha512-fRHTG8g/Gif+kSh50gaGEdToemgfj74aRX3swtiouboip5JDLAyDE9F11nHMIcvOaXeOC6D7SpNhi7uFyB7Uww==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
+      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
       "license": "MIT",
       "funding": {
         "type": "github",
@@ -11572,6 +11572,16 @@
         "react-dom": "^18.2.0"
       }
     },
+    "node_modules/utopia-ui/node_modules/date-fns": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-3.6.0.tgz",
+      "integrity": "sha512-fRHTG8g/Gif+kSh50gaGEdToemgfj74aRX3swtiouboip5JDLAyDE9F11nHMIcvOaXeOC6D7SpNhi7uFyB7Uww==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/kossnocorp"
+      }
+    },
     "node_modules/uzip": {
       "version": "0.20201231.0",
       "resolved": "https://registry.npmjs.org/uzip/-/uzip-0.20201231.0.tgz",
diff --git a/app/package.json b/app/package.json
index c89829ab..0ac26709 100644
--- a/app/package.json
+++ b/app/package.json
@@ -18,7 +18,7 @@
     "@tailwindcss/vite": "^4.0.15",
     "@types/geojson": "^7946.0.10",
     "axios": "^1.6.5",
-    "date-fns": "^3.3.1",
+    "date-fns": "^4.1.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-rnd": "^10.4.1",