diff --git a/package-lock.json b/package-lock.json
index 3ec759e..10fdbcb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -886,7 +886,7 @@
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-          "resolved": "http://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
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@@ -1389,7 +1389,7 @@
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         "ethereumjs-vm": {
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-          "resolved": "http://registry.npmjs.org/ethereumjs-vm/-/ethereumjs-vm-2.3.4.tgz",
+          "resolved": "https://registry.npmjs.org/ethereumjs-vm/-/ethereumjs-vm-2.3.4.tgz",
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@@ -1407,7 +1407,7 @@
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-          "resolved": "http://registry.npmjs.org/web3-provider-engine/-/web3-provider-engine-13.8.0.tgz",
+          "resolved": "https://registry.npmjs.org/web3-provider-engine/-/web3-provider-engine-13.8.0.tgz",
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@@ -1440,7 +1440,7 @@
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-      "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git",
+      "from": "git+https://github.com/ethereumjs/ethereumjs-abi.git#2863c40e0982acfc0b7163f0285d4c56427c7799",
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@@ -1490,7 +1490,7 @@
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-      "resolved": "http://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
+      "resolved": "https://registry.npmjs.org/ethereumjs-block/-/ethereumjs-block-1.7.1.tgz",
       "integrity": "sha512-B+sSdtqm78fmKkBq78/QLKJbu/4Ts4P2KFISdgcuZUPDm9x+N7qgBPIIFUGbaakQh8bzuquiRVbdmvPKqbILRg==",
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@@ -1553,7 +1553,7 @@
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-      "resolved": "http://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz",
+      "resolved": "https://registry.npmjs.org/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz",
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@@ -1646,7 +1646,7 @@
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-          "resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.3.tgz",
           "integrity": "sha1-Z+LoY3lyFVMN/zGOW/nc6/1Hsho="
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@@ -1771,9 +1771,9 @@
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-      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
-      "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
+      "version": "1.0.12",
+      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.12.tgz",
+      "integrity": "sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==",
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@@ -2372,9 +2372,9 @@
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-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
-      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg=="
+      "version": "4.17.15",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
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@@ -2449,7 +2449,7 @@
       "dependencies": {
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           "version": "1.5.2",
-          "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
           "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo="
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         "ethereumjs-util": {
@@ -2564,7 +2564,7 @@
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     "node-fetch": {
       "version": "2.1.2",
-      "resolved": "http://registry.npmjs.org/node-fetch/-/node-fetch-2.1.2.tgz",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.1.2.tgz",
       "integrity": "sha1-q4hOjn5X44qUR1POxwb3iNF2i7U="
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@@ -3055,7 +3055,7 @@
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     "semver": {
       "version": "5.3.0",
-      "resolved": "http://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
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@@ -3252,13 +3252,26 @@
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-      "resolved": "http://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
-      "integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
+      "version": "2.2.2",
+      "resolved": "http://registry.npmjs.org/tar/-/tar-2.2.2.tgz",
+      "integrity": "sha512-FCEhQ/4rE1zYv9rYXJw/msRqsnmlje5jHP6huWeBZ704jUTy02c5AZyWujpMR1ax6mVw9NyJMfuK2CMDWVIfgA==",
       "requires": {
         "block-stream": "*",
-        "fstream": "^1.0.2",
+        "fstream": "^1.0.12",
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+      },
+      "dependencies": {
+        "fstream": {
+          "version": "1.0.12",
+          "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.12.tgz",
+          "integrity": "sha512-WvJ193OHa0GHPEL+AycEJgxvBEwyfRkN1vhjca23OaPVMCaLCXTd5qAu82AjTcgP1UJmytkOKb63Ypde7raDIg==",
+          "requires": {
+            "graceful-fs": "^4.1.2",
+            "inherits": "~2.0.0",
+            "mkdirp": ">=0.5 0",
+            "rimraf": "2"
+          }
+        }
       }
     },
     "through": {