diff --git a/backend/package-lock.json b/backend/package-lock.json
old mode 100755
new mode 100644
index 5176feb..62cd528
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -511,11 +511,11 @@
       "integrity": "sha1-0WkB0QzOxZUWwZe5zNiTBom4E7Q="
     },
     "aws-sdk": {
-      "version": "2.657.0",
-      "resolved": "https://registry.npm.taobao.org/aws-sdk/download/aws-sdk-2.657.0.tgz",
-      "integrity": "sha1-Qnzs2Brr/CR+x/h2pi90RWQ552w=",
+      "version": "2.814.0",
+      "resolved": "https://registry.npmjs.org/aws-sdk/-/aws-sdk-2.814.0.tgz",
+      "integrity": "sha512-empd1m/J/MAkL6d9OeRpmg9thobULu0wk4v8W3JToaxGi2TD7PIdvE6yliZKyOVAdJINhBWEBhxR4OUIHhcGbQ==",
       "requires": {
-        "buffer": "4.9.1",
+        "buffer": "4.9.2",
         "events": "1.1.1",
         "ieee754": "1.1.13",
         "jmespath": "0.15.0",
@@ -526,10 +526,20 @@
         "xml2js": "0.4.19"
       },
       "dependencies": {
+        "buffer": {
+          "version": "4.9.2",
+          "resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.2.tgz",
+          "integrity": "sha512-xq+q3SRMOxGivLhBNaUdC64hDTQwejJ+H0T/NB1XMtTVEwNTrfFF3gAxiyW0Bu/xWEGhjVKgUcMhCrUy2+uCWg==",
+          "requires": {
+            "base64-js": "^1.0.2",
+            "ieee754": "^1.1.4",
+            "isarray": "^1.0.0"
+          }
+        },
         "uuid": {
           "version": "3.3.2",
-          "resolved": "https://registry.npm.taobao.org/uuid/download/uuid-3.3.2.tgz?cache=0&sync_timestamp=1585683749035&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fuuid%2Fdownload%2Fuuid-3.3.2.tgz",
-          "integrity": "sha1-G0r0lV6zB3xQHCOHL8ZROBFYcTE="
+          "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+          "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
         }
       }
     },
@@ -853,6 +863,7 @@
       "version": "4.9.1",
       "resolved": "https://registry.npm.taobao.org/buffer/download/buffer-4.9.1.tgz",
       "integrity": "sha1-bRu2AbB6TvztlwlBMgkwJ8lbwpg=",
+      "dev": true,
       "requires": {
         "base64-js": "^1.0.2",
         "ieee754": "^1.1.4",
@@ -1553,7 +1564,7 @@
     },
     "events": {
       "version": "1.1.1",
-      "resolved": "https://registry.npm.taobao.org/events/download/events-1.1.1.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fevents%2Fdownload%2Fevents-1.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/events/-/events-1.1.1.tgz",
       "integrity": "sha1-nr23Y1rQmccNzEwqH1AEKI6L2SQ="
     },
     "evp_bytestokey": {
@@ -2770,7 +2781,7 @@
     },
     "jmespath": {
       "version": "0.15.0",
-      "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/jmespath/-/jmespath-0.15.0.tgz",
+      "resolved": "https://registry.npmjs.org/jmespath/-/jmespath-0.15.0.tgz",
       "integrity": "sha1-o/Iiqarp+Wb10nx5ZRDigJF2Qhc="
     },
     "json-mask": {
@@ -3727,7 +3738,7 @@
     },
     "sax": {
       "version": "1.2.1",
-      "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/sax/-/sax-1.2.1.tgz",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.1.tgz",
       "integrity": "sha1-e45lYZCyKOgaZq6nSEgNgozS03o="
     },
     "schema-utils": {
@@ -4471,7 +4482,7 @@
     },
     "url": {
       "version": "0.10.3",
-      "resolved": "https://registry.npm.taobao.org/url/download/url-0.10.3.tgz",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.10.3.tgz",
       "integrity": "sha1-Ah5NnHcF8hu/N9A861h2dAJ3TGQ=",
       "requires": {
         "punycode": "1.3.2",
@@ -4643,8 +4654,8 @@
     },
     "xml2js": {
       "version": "0.4.19",
-      "resolved": "https://registry.npm.taobao.org/xml2js/download/xml2js-0.4.19.tgz",
-      "integrity": "sha1-aGwg8hMgnpSr8NG88e+qKRx4J6c=",
+      "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.19.tgz",
+      "integrity": "sha512-esZnJZJOiJR9wWKMyuvSE1y6Dq5LCuJanqhxslH2bxM6duahNZ+HMpCLhBQGZkbX6xRf8x1Y2eJlgt2q3qo49Q==",
       "requires": {
         "sax": ">=0.6.0",
         "xmlbuilder": "~9.0.1"
@@ -4652,7 +4663,7 @@
     },
     "xmlbuilder": {
       "version": "9.0.7",
-      "resolved": "https://nexus.solutions.consensys-uk.net/repository/komgo-npm-group/xmlbuilder/-/xmlbuilder-9.0.7.tgz",
+      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-9.0.7.tgz",
       "integrity": "sha1-Ey7mPS7FVlxVfiD0wi35rKaGsQ0="
     },
     "xtend": {
diff --git a/backend/package.json b/backend/package.json
old mode 100755
new mode 100644
index 88c02b5..726cb3b
--- a/backend/package.json
+++ b/backend/package.json
@@ -18,7 +18,7 @@
     "@types/aws-lambda": "^8.10.50",
     "@types/jsonwebtoken": "^8.3.9",
     "@types/node": "^10.17.19",
-    "aws-sdk": "^2.657.0",
+    "aws-sdk": "^2.814.0",
     "serverless-aws-documentation": "^1.1.0",
     "serverless-iam-roles-per-function": "^1.0.4",
     "serverless-plugin-canary-deployments": "^0.4.8",