diff --git a/functions/package-lock.json b/functions/package-lock.json
index c343457..1b1b841 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -132,7 +132,8 @@
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+      "integrity": "sha1-m4sMxmPWaafY9vXQiToU00jzD78=",
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+      "integrity": "sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E=",
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-      "integrity": "sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik="
+      "integrity": "sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik=",
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@@ -953,12 +1010,14 @@
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@@ -966,7 +1025,7 @@
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-        "mime": "1.4.1",
-        "ms": "2.0.0",
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+        "mime": "1.6.0",
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-        "range-parser": "~1.2.0",
-        "statuses": "~1.4.0"
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+          "version": "1.6.0",
+          "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
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-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
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+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
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-        "parseurl": "~1.3.2",
-        "send": "0.16.2"
+        "parseurl": "~1.3.3",
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-      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
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+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
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@@ -3064,14 +3240,15 @@
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-      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
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+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
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+      "optional": true,
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@@ -3079,12 +3256,14 @@
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-      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI="
+      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI=",
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       "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+      "optional": true,
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@@ -3101,6 +3280,7 @@
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       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "optional": true,
       "requires": {
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@@ -3114,7 +3294,8 @@
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       "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
-      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls="
+      "integrity": "sha1-6NK6H6nJBXAwPAMLaQD31fiavls=",
+      "optional": true
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@@ -3175,6 +3356,7 @@
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+      "optional": true,
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@@ -3318,12 +3500,13 @@
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-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "optional": true
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     "utils-merge": {
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-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
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@@ -3338,7 +3521,8 @@
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+      "optional": true
     },
     "websocket-driver": {
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@@ -3366,7 +3550,8 @@
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       "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.4.tgz",
-      "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY="
+      "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY=",
+      "optional": true
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@@ -3378,6 +3563,7 @@
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       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "optional": true,
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@@ -3411,7 +3597,8 @@
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-      "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ="
+      "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ=",
+      "optional": true
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@@ -3426,17 +3613,20 @@
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       "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
+      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+      "optional": true
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+      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
+      "optional": true
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     "yargs": {
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       "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
       "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
+      "optional": true,
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diff --git a/functions/package.json b/functions/package.json
index b51c7cf..5991e1e 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -16,7 +16,7 @@
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     "body-parser": "^1.19.0",
     "cors": "^2.8.5",
-    "express": "^4.16.4",
+    "express": "^4.17.3",
     "firebase-admin": "~7.0.0",
     "firebase-functions": "^2.3.0",
     "tplink-cloud-api": "^0.3.8",