diff --git a/package-lock.json b/package-lock.json
index aa32413..c4b19cd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -107,15 +107,23 @@
       "dev": true
     },
     "ajv": {
-      "version": "6.10.0",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
-      "integrity": "sha512-nffhOpkymDECQyR0mnsUtoCE8RlX38G0rYP+wgLWFyZuUyuuojSSvi/+euOiQBIn63whYwYVIIH1TvE3tu4OEg==",
+      "version": "6.12.6",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
       "dev": true,
       "requires": {
-        "fast-deep-equal": "^2.0.1",
+        "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
         "json-schema-traverse": "^0.4.1",
         "uri-js": "^4.2.2"
+      },
+      "dependencies": {
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
+          "dev": true
+        }
       }
     },
     "ajv-keywords": {
@@ -1391,12 +1399,20 @@
       }
     },
     "erlpack": {
-      "version": "0.1.3",
-      "resolved": "github:hammerandchisel/erlpack#ff0139045ca4cc457462e5a1a88f6a0bc5c27c4b",
+      "version": "github:hammerandchisel/erlpack#3b793a333dd3f6a140b9168ea91e9fa9660753ce",
+      "from": "github:hammerandchisel/erlpack",
       "optional": true,
       "requires": {
         "bindings": "^1.5.0",
-        "nan": "^2.14.0"
+        "nan": "^2.15.0"
+      },
+      "dependencies": {
+        "nan": {
+          "version": "2.15.0",
+          "resolved": "https://registry.npmjs.org/nan/-/nan-2.15.0.tgz",
+          "integrity": "sha512-8ZtvEnA2c5aYCZYd1cvgdnU6cqwixRoYg70xPLWUws5ORTa/lnw+u4amixRS/Ac5U5mQVgp9pnlSUnbNWFaWZQ==",
+          "optional": true
+        }
       }
     },
     "error-ex": {
@@ -1972,12 +1988,6 @@
         "time-stamp": "^1.0.0"
       }
     },
-    "fast-deep-equal": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
-      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=",
-      "dev": true
-    },
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
@@ -4203,6 +4213,7 @@
       "version": "2.14.0",
       "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
       "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==",
+      "dev": true,
       "optional": true
     },
     "nanomatch": {