diff --git a/package-lock.json b/package-lock.json
index 3fd4fbd..eac98fd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -239,34 +239,17 @@
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-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
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+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz",
+      "integrity": "sha1-ysmvh2LIWDYYcAPI3+GT5eLq5d8=",
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-        "brorand": "^1.1.0",
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+        "brorand": "^1.0.1",
         "hash.js": "^1.0.0",
-        "hmac-drbg": "^1.0.1",
-        "inherits": "^2.0.4",
-        "minimalistic-assert": "^1.0.1",
-        "minimalistic-crypto-utils": "^1.0.1"
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-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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-        "minimalistic-assert": {
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-          "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
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+        "hmac-drbg": "^1.0.0",
+        "inherits": "^2.0.1",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.0"
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@@ -327,6 +310,11 @@
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+      "resolved": "https://registry.npmjs.org/indexof/-/indexof-0.0.1.tgz",
+      "integrity": "sha1-gtwzbSMrkGIXnQWrMpOmYFn9Q10="
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@@ -602,9 +590,12 @@
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-      "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.2.tgz",
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+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-0.0.4.tgz",
+      "integrity": "sha1-XX6kW7755Kb/ZflUOOCofDV9WnM=",
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       "version": "4.0.1",