diff --git a/package-lock.json b/package-lock.json
index d23170d..db4372f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,6 +25,14 @@
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     },
+    "bindings": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "requires": {
+        "file-uri-to-path": "1.0.0"
+      }
+    },
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       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-equal/-/buffer-equal-1.0.0.tgz",
@@ -55,6 +63,14 @@
       "resolved": "https://registry.npmjs.org/endian-toggle/-/endian-toggle-0.0.0.tgz",
       "integrity": "sha1-5cx1eLEDLW7gHq/Nc3ZdsNtNwKY="
     },
+    "erlpack": {
+      "version": "github:hammerandchisel/erlpack#cbe76be04c2210fc9cb6ff95910f0937c1011d04",
+      "from": "github:hammerandchisel/erlpack",
+      "requires": {
+        "bindings": "^1.5.0",
+        "nan": "^2.15.0"
+      }
+    },
     "fast-deep-equal": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
@@ -65,6 +81,11 @@
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
       "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
     },
+    "file-uri-to-path": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
+      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="
+    },
     "inherits": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
@@ -129,6 +150,11 @@
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
       "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
+    "nan": {
+      "version": "2.17.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.17.0.tgz",
+      "integrity": "sha512-2ZTgtl0nJsO0KQCjEpxcIr5D+Yv90plTitZt9JBfQvVJDS5seMl3FOvsh3+9CoYWXf/1l5OaZzzF6nDm4cagaQ=="
+    },
     "node-rsa": {
       "version": "0.4.2",
       "resolved": "https://registry.npmjs.org/node-rsa/-/node-rsa-0.4.2.tgz",
@@ -248,7 +274,7 @@
       "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.1.tgz",
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       "requires": {
-        "async-limiter": "1.0.1"
+        "async-limiter": "~1.0.0"
       }
     },
     "yggdrasil": {