diff --git a/functions/package-lock.json b/functions/package-lock.json
index e5b23b4..149bfc8 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -13,6 +13,7 @@
         "aws-sdk": "^2.1692.0",
         "axios": "^1.9.0",
         "cors": "^2.8.5",
+        "date-fns": "^4.1.0",
         "firebase-admin": "^12.6.0",
         "firebase-functions": "^6.0.1",
         "form-data": "^4.0.1",
@@ -3805,6 +3806,15 @@
         "utrie": "^1.0.2"
       }
     },
+    "node_modules/date-fns": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
+      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/kossnocorp"
+      }
+    },
     "node_modules/dayjs": {
       "version": "1.11.13",
       "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.11.13.tgz",
diff --git a/functions/package.json b/functions/package.json
index b9f1c89..0e77a8f 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -20,6 +20,7 @@
     "aws-sdk": "^2.1692.0",
     "axios": "^1.9.0",
     "cors": "^2.8.5",
+    "date-fns": "^4.1.0",
     "firebase-admin": "^12.6.0",
     "firebase-functions": "^6.0.1",
     "form-data": "^4.0.1",