diff --git a/blockchain/ethereum/bancor/package-lock.json b/blockchain/ethereum/bancor/package-lock.json
index 8fc1c46..6504da8 100644
--- a/blockchain/ethereum/bancor/package-lock.json
+++ b/blockchain/ethereum/bancor/package-lock.json
@@ -3575,13 +3575,6 @@
               "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
               "dev": true,
               "optional": true
-            },
-            "qs": {
-              "version": "6.7.0",
-              "resolved": "https://registry.npm.taobao.org/qs/download/qs-6.7.0.tgz?cache=0&sync_timestamp=1616385248556&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fqs%2Fdownload%2Fqs-6.7.0.tgz",
-              "integrity": "sha1-QdwaAV49WB8WIXdr4xr7KHapsbw=",
-              "dev": true,
-              "optional": true
             }
           }
         },
@@ -6390,13 +6383,6 @@
               "dev": true,
               "optional": true
             },
-            "qs": {
-              "version": "6.7.0",
-              "resolved": "https://registry.npm.taobao.org/qs/download/qs-6.7.0.tgz?cache=0&sync_timestamp=1616385248556&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fqs%2Fdownload%2Fqs-6.7.0.tgz",
-              "integrity": "sha1-QdwaAV49WB8WIXdr4xr7KHapsbw=",
-              "dev": true,
-              "optional": true
-            },
             "safe-buffer": {
               "version": "5.1.2",
               "resolved": "https://registry.npm.taobao.org/safe-buffer/download/safe-buffer-5.1.2.tgz?cache=0&sync_timestamp=1589129010497&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsafe-buffer%2Fdownload%2Fsafe-buffer-5.1.2.tgz",
@@ -8631,12 +8617,6 @@
           "integrity": "sha1-tYsBCsQMIsVldhbI0sLALHv0eew=",
           "dev": true
         },
-        "qs": {
-          "version": "6.5.2",
-          "resolved": "https://registry.npm.taobao.org/qs/download/qs-6.5.2.tgz?cache=0&sync_timestamp=1616385248556&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fqs%2Fdownload%2Fqs-6.5.2.tgz",
-          "integrity": "sha1-yzroBuh0BERYTvFUzo7pjUA/PjY=",
-          "dev": true
-        },
         "query-string": {
           "version": "5.1.1",
           "resolved": "https://registry.nlark.com/query-string/download/query-string-5.1.1.tgz",
@@ -8857,6 +8837,14 @@
             "tough-cookie": "~2.5.0",
             "tunnel-agent": "^0.6.0",
             "uuid": "^3.3.2"
+          },
+          "dependencies": {
+            "qs": {
+              "version": "6.5.3",
+              "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.3.tgz",
+              "integrity": "sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA==",
+              "dev": true
+            }
           }
         },
         "resolve-url": {
@@ -11250,15 +11238,6 @@
           "integrity": "sha1-0J0fNXtEP0kzgqjrPM0YOHKuYAk=",
           "dev": true
         },
-        "qs": {
-          "version": "6.10.1",
-          "resolved": "https://registry.npm.taobao.org/qs/download/qs-6.10.1.tgz?cache=0&sync_timestamp=1616385248556&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fqs%2Fdownload%2Fqs-6.10.1.tgz",
-          "integrity": "sha1-STFIL6jWR6Wqt5nFJx0hM7mB+2o=",
-          "dev": true,
-          "requires": {
-            "side-channel": "^1.0.4"
-          }
-        },
         "require-from-string": {
           "version": "2.0.2",
           "resolved": "http://registry.npm.taobao.org/require-from-string/download/require-from-string-2.0.2.tgz",
@@ -12828,9 +12807,9 @@
       "dev": true
     },
     "qs": {
-      "version": "6.5.2",
-      "resolved": "https://registry.npm.taobao.org/qs/download/qs-6.5.2.tgz?cache=0&sync_timestamp=1616385248556&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fqs%2Fdownload%2Fqs-6.5.2.tgz",
-      "integrity": "sha1-yzroBuh0BERYTvFUzo7pjUA/PjY=",
+      "version": "6.7.0",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
+      "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==",
       "dev": true
     },
     "query-string": {
@@ -12938,6 +12917,14 @@
         "tough-cookie": "~2.5.0",
         "tunnel-agent": "^0.6.0",
         "uuid": "^3.3.2"
+      },
+      "dependencies": {
+        "qs": {
+          "version": "6.5.3",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.3.tgz",
+          "integrity": "sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA==",
+          "dev": true
+        }
       }
     },
     "require-directory": {