diff --git a/package-lock.json b/package-lock.json
index 8acb229..2e49af3 100644
--- a/package-lock.json
+++ b/package-lock.json
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+        "commander": "5.0.0",
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-      "resolved": "https://registry.npmjs.org/nopt/-/nopt-3.0.6.tgz",
-      "integrity": "sha1-xkZdvwirzU2zWTF/eaxopkayj/k=",
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       "requires": {
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@@ -5428,23 +5452,23 @@
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-        "minipass": "^2.3.4",
-        "minizlib": "^1.1.1",
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diff --git a/package.json b/package.json
index 68f2855..f9b85d2 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
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     "imagemin-svgo": "7.0.0",
     "jimp": "0.6.4",
-    "node-zopfli-es": "1.0.3",
+    "node-zopfli-es": "1.0.4",
     "purify-css": "1.2.5"
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   "devDependencies": {