diff --git a/package-lock.json b/package-lock.json
index 7ae529d6..4e598566 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2008,6 +2008,16 @@
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-			"integrity": "sha1-erwi5kTf9jsKltWrfyeQwPAavJU=",
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-					"dev": true,
-					"requires": {
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+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/opn-cli/-/opn-cli-4.0.0.tgz",
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-					"integrity": "sha1-Ei4WFZHiH/TFJTAwVpPyDmOTo5g=",
+					"version": "6.0.0",
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+					"integrity": "sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=",
+					"dev": true,
+					"requires": {
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+						"normalize-package-data": "^2.3.2",
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+				"read-pkg-up": {
+					"version": "3.0.0",
+					"resolved": "https://registry.npmjs.org/read-pkg-up/-/read-pkg-up-3.0.0.tgz",
+					"integrity": "sha1-PtSWaF26D4/hGNBpHcUfSh/5bwc=",
+					"dev": true,
+					"requires": {
+						"find-up": "^2.0.0",
+						"read-pkg": "^3.0.0"
+					}
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+				"redent": {
+					"version": "2.0.0",
+					"resolved": "https://registry.npmjs.org/redent/-/redent-2.0.0.tgz",
+					"integrity": "sha1-wbIAe0LVfrE4kHmzyDM2OdXhzKo=",
+					"dev": true,
+					"requires": {
+						"indent-string": "^3.0.0",
+						"strip-indent": "^2.0.0"
+					}
+				},
+				"strip-indent": {
+					"version": "2.0.0",
+					"resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-2.0.0.tgz",
+					"integrity": "sha1-XvjbKV0B5u1sv3qrlpmNeCJSe2g=",
+					"dev": true
+				},
+				"trim-newlines": {
+					"version": "2.0.0",
+					"resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-2.0.0.tgz",
+					"integrity": "sha1-tAPQuRvlDDMd/EuC7s6yLD3hbSA=",
 					"dev": true
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@@ -6509,6 +6622,12 @@
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 			"dev": true
 		},
+		"quick-lru": {
+			"version": "1.1.0",
+			"resolved": "https://registry.npmjs.org/quick-lru/-/quick-lru-1.1.0.tgz",
+			"integrity": "sha1-Q2CxfGETatOAeDl/8RQW4Ybc+7g=",
+			"dev": true
+		},
 		"random-int": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/random-int/-/random-int-1.0.0.tgz",
@@ -7522,41 +7641,24 @@
 				"readable-stream": "^2"
 			}
 		},
+		"temp-dir": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/temp-dir/-/temp-dir-1.0.0.tgz",
+			"integrity": "sha1-CnwOom06Oa+n4OvqnB/AvE2qAR0=",
+			"dev": true
+		},
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-			"version": "2.1.0",
-			"resolved": "https://registry.npmjs.org/temp-write/-/temp-write-2.1.0.tgz",
-			"integrity": "sha1-WYkJGODvCdVIqqNC9L00CdhATpY=",
+			"version": "3.4.0",
+			"resolved": "https://registry.npmjs.org/temp-write/-/temp-write-3.4.0.tgz",
+			"integrity": "sha1-jP9jD7fp2gXwR8dM5M5NaFRX1JI=",
 			"dev": true,
 			"requires": {
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-					"version": "2.3.0",
-					"resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
-					"integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
-					"dev": true
-				},
-				"pinkie": {
-					"version": "2.0.4",
-					"resolved": "https://registry.npmjs.org/pinkie/-/pinkie-2.0.4.tgz",
-					"integrity": "sha1-clVrgM+g1IqXToDnckjoDtT3+HA=",
-					"dev": true
-				},
-				"pinkie-promise": {
-					"version": "2.0.1",
-					"resolved": "https://registry.npmjs.org/pinkie-promise/-/pinkie-promise-2.0.1.tgz",
-					"integrity": "sha1-ITXW36ejWMBprJsXh3YogihFD/o=",
-					"dev": true,
-					"requires": {
-						"pinkie": "^2.0.0"
-					}
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+				"is-stream": "^1.1.0",
+				"make-dir": "^1.0.0",
+				"pify": "^3.0.0",
+				"temp-dir": "^1.0.0",
+				"uuid": "^3.0.1"
 			}
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@@ -7905,9 +8007,9 @@
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 		},
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-			"resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.3.tgz",
-			"integrity": "sha1-Z+LoY3lyFVMN/zGOW/nc6/1Hsho=",
+			"version": "3.3.2",
+			"resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+			"integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==",
 			"dev": true
 		},
 		"validate-npm-package-license": {
@@ -8088,6 +8190,23 @@
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 			"integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
 			"dev": true
+		},
+		"yargs-parser": {
+			"version": "10.1.0",
+			"resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+			"integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+			"dev": true,
+			"requires": {
+				"camelcase": "^4.1.0"
+			},
+			"dependencies": {
+				"camelcase": {
+					"version": "4.1.0",
+					"resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+					"integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
+					"dev": true
+				}
+			}
 		}
 	}
 }
diff --git a/package.json b/package.json
index 16688de5..fe793303 100644
--- a/package.json
+++ b/package.json
@@ -114,7 +114,7 @@
 		"eslint-config-google": "^0.10.0",
 		"jsdoc": "^3.5.5",
 		"nyc": "^13.0.1",
-		"opn-cli": "^3.1.0",
+		"opn-cli": "^4.0.0",
 		"rimraf": "^2.6.2",
 		"tap-nyan": "^1.1.0"
 	}