diff --git a/package-lock.json b/package-lock.json
index 356b9db..8b52f50 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,47 +5,83 @@
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+      "resolved": "https://registry.npmjs.org/@tensorflow/tfjs-converter/-/tfjs-converter-4.20.0.tgz",
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@@ -53,18 +89,23 @@
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@@ -73,24 +114,40 @@
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@@ -114,6 +171,38 @@
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@@ -128,6 +217,11 @@
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@@ -142,7 +236,12 @@
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@@ -153,10 +252,15 @@
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@@ -169,6 +273,11 @@
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@@ -183,6 +292,11 @@
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@@ -227,17 +346,22 @@
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@@ -250,9 +374,12 @@
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@@ -269,16 +396,31 @@
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+      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.11.tgz",
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-      "resolved": "https://registry.npmjs.org/seedrandom/-/seedrandom-2.4.3.tgz",
-      "integrity": "sha1-JDhQTa0zkXMUv/GKxNeU8W1qrsw="
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@@ -305,12 +447,56 @@
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+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
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+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
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+        "is-fullwidth-code-point": "^3.0.0",
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+    "string_decoder": {
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+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
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+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
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+    "supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
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+      "requires": {
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+    "tr46": {
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+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
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@@ -323,11 +509,59 @@
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+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ=="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
+    "wrap-ansi": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
+      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
+      "requires": {
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+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      }
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       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
+    },
+    "y18n": {
+      "version": "5.0.8",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
+      "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA=="
+    },
+    "yargs": {
+      "version": "16.2.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.0.tgz",
+      "integrity": "sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==",
+      "requires": {
+        "cliui": "^7.0.2",
+        "escalade": "^3.1.1",
+        "get-caller-file": "^2.0.5",
+        "require-directory": "^2.1.1",
+        "string-width": "^4.2.0",
+        "y18n": "^5.0.5",
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+      }
+    },
+    "yargs-parser": {
+      "version": "20.2.9",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.9.tgz",
+      "integrity": "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w=="
     }
   }
 }
diff --git a/package.json b/package.json
index 4445131..98717ae 100644
--- a/package.json
+++ b/package.json
@@ -28,8 +28,8 @@
     }
   ],
   "dependencies": {
-    "@tensorflow/tfjs": "^1.7.4",
-    "@tensorflow/tfjs-core": "1.7.4",
+    "@tensorflow/tfjs": "^4.20.0",
+    "@tensorflow/tfjs-core": "4.20.0",
     "data-science-lab-core": "^0.0.30"
   },
   "devDependencies": {