diff --git a/package-lock.json b/package-lock.json
index ec44862..bf9b75b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,15 @@
 {
   "name": "backend.ai-client",
-  "version": "21.3.1",
+  "version": "21.9.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "backend.ai-client",
-      "version": "21.3.1",
+      "version": "21.9.0",
       "license": "MIT",
       "dependencies": {
-        "@types/node": "^16.7.5",
-        "node-fetch": "^2.6.1"
+        "@types/node": "^16.7.5"
       },
       "devDependencies": {
         "browserify": "^17.0.0",
@@ -688,7 +687,7 @@
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       "version": "1.1.3",
-      "resolved": "http://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
+      "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
       "integrity": "sha1-SCnId+n+SbMWHzvzZziI4gRpmGA=",
       "dev": true
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@@ -2033,12 +2032,23 @@
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     },
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-      "version": "2.6.1",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
-      "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==",
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
       "dev": true,
+      "dependencies": {
+        "whatwg-url": "^5.0.0"
+      },
       "engines": {
         "node": "4.x || >=6.0.0"
+      },
+      "peerDependencies": {
+        "encoding": "^0.1.0"
+      },
+      "peerDependenciesMeta": {
+        "encoding": {
+          "optional": true
+        }
       }
     },
     "node_modules/object-assign": {
@@ -2729,6 +2739,12 @@
         "readable-stream": "2 || 3"
       }
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+    "node_modules/tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=",
+      "dev": true
+    },
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@@ -2970,6 +2986,22 @@
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       "dev": true
     },
+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=",
+      "dev": true
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "dev": true,
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "node_modules/which-typed-array": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/which-typed-array/-/which-typed-array-1.1.2.tgz",
@@ -3645,7 +3677,7 @@
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     "convert-source-map": {
       "version": "1.1.3",
-      "resolved": "http://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
+      "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-1.1.3.tgz",
       "integrity": "sha1-SCnId+n+SbMWHzvzZziI4gRpmGA=",
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@@ -4837,10 +4869,13 @@
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-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.1.tgz",
-      "integrity": "sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==",
-      "dev": true
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "dev": true,
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "object-assign": {
       "version": "4.1.1",
@@ -5466,6 +5501,12 @@
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+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=",
+      "dev": true
+    },
     "transform-ast": {
       "version": "2.4.4",
       "resolved": "https://registry.npmjs.org/transform-ast/-/transform-ast-2.4.4.tgz",
@@ -5681,6 +5722,22 @@
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       "dev": true
     },
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=",
+      "dev": true
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha1-lmRU6HZUYuN2RNNib2dCzotwll0=",
+      "dev": true,
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "which-typed-array": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/which-typed-array/-/which-typed-array-1.1.2.tgz",