diff --git a/functions/package-lock.json b/functions/package-lock.json
index 564593c..5b207dc 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -1729,9 +1729,9 @@
       }
     },
     "dayjs": {
-      "version": "1.7.7",
-      "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.7.7.tgz",
-      "integrity": "sha512-Qlkiu0NNDpYwhk0syK4ImvAl/5YnsEMkvC2O123INviGeOA3Q8s5VyVkZzmN5SC7Wv9bb1+rfwO+uSqtHB4UWw=="
+      "version": "1.10.6",
+      "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.10.6.tgz",
+      "integrity": "sha512-AztC/IOW4L1Q41A86phW5Thhcrco3xuAA+YX/BLpLWWjRcTj5TOt/QImBLmCKlrF7u7k47arTnOyL6GnbG8Hvw=="
     },
     "debug": {
       "version": "3.1.0",
diff --git a/functions/package.json b/functions/package.json
index 3f6a542..ac5718c 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -14,7 +14,7 @@
     "test": "jest"
   },
   "dependencies": {
-    "dayjs": "^1.7.7",
+    "dayjs": "^1.10.6",
     "eslint": "^5.7.0",
     "eslint-plugin-promise": "^4.0.1",
     "firebase-admin": "^6.0.0",