diff --git a/package-lock.json b/package-lock.json
index 1c92da5..bd2d755 100644
--- a/package-lock.json
+++ b/package-lock.json
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-          "integrity": "sha1-HmWWmWXMvC20VIxrhKbyxa7dRzk=",
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+          "version": "2.4.3",
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+          "dev": true,
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+            "imurmurhash": "^0.1.4",
+            "signal-exit": "^3.0.2"
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+          "dev": true
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+          "bundled": true,
+          "dev": true
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+        "y18n": {
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+          "bundled": true,
+          "dev": true
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+        "yallist": {
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+          "bundled": true,
+          "dev": true
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+        "yargs": {
+          "version": "11.0.0",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "cliui": "^4.0.0",
+            "decamelize": "^1.1.1",
+            "find-up": "^2.1.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^2.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1",
+            "yargs-parser": "^9.0.2"
+          },
+          "dependencies": {
+            "y18n": {
+              "version": "3.2.1",
+              "bundled": true,
+              "dev": true
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+        },
+        "yargs-parser": {
+          "version": "9.0.2",
+          "bundled": true,
           "dev": true,
           "requires": {
-            "graceful-fs": "^3.0.2",
-            "slide": "^1.1.5"
+            "camelcase": "^4.1.0"
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@@ -6710,12 +8500,6 @@
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@@ -6894,12 +8678,6 @@
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-      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
-      "dev": true
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@@ -6969,12 +8747,6 @@
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-      "resolved": "https://registry.npmjs.org/sorted-object/-/sorted-object-1.0.0.tgz",
-      "integrity": "sha1-XR9PnB+yzUiWWWcwTiEutEz7bQU=",
-      "dev": true
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@@ -7016,17 +8788,6 @@
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       "dev": true
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-      "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
-      "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
-      "dev": true,
-      "requires": {
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@@ -7059,12 +8820,6 @@
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-      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
-      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
-      "dev": true
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@@ -7144,15 +8899,6 @@
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-      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
-      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
-      "dev": true,
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diff --git a/package.json b/package.json
index 1db136e..d6e9359 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "gulp-tap": "^0.1.3",
     "gulp-util": "^3.0.4",
     "kansuu.js": "^0.3",
-    "npm": "^2.7.3",
+    "npm": "^6.13.4",
     "random-js": "^1.0.4",
     "run-sequence": "^1.1.5",
     "seedrandom": "^2.3.11",