diff --git a/package-lock.json b/package-lock.json
index f007222..962f684 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2405,9 +2405,9 @@
 			"dev": true
 		},
 		"filesize": {
-			"version": "3.6.1",
-			"resolved": "https://registry.npmjs.org/filesize/-/filesize-3.6.1.tgz",
-			"integrity": "sha512-7KjR1vv6qnicaPMi1iiTcI85CyYwRO/PSFCu6SvqL8jN2Wjt/NIYQTFtFs7fSDCYOstUkEWIQGFUg5YZQfjlcg=="
+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/filesize/-/filesize-4.0.0.tgz",
+			"integrity": "sha512-IGrOTisl83FmbpiL5KCpfF7+6CRcmndNaWxwYWcnSqXtoNUhVO+1l8rKK4GVE7A8f4fEDkSocS9X6+eXHkEhGA=="
 		},
 		"fill-range": {
 			"version": "2.2.3",
@@ -2584,12 +2584,14 @@
 				"balanced-match": {
 					"version": "1.0.0",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"brace-expansion": {
 					"version": "1.1.11",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"balanced-match": "^1.0.0",
 						"concat-map": "0.0.1"
@@ -2604,17 +2606,20 @@
 				"code-point-at": {
 					"version": "1.1.0",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"concat-map": {
 					"version": "0.0.1",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"console-control-strings": {
 					"version": "1.1.0",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"core-util-is": {
 					"version": "1.0.2",
@@ -2731,7 +2736,8 @@
 				"inherits": {
 					"version": "2.0.3",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"ini": {
 					"version": "1.3.5",
@@ -2743,6 +2749,7 @@
 					"version": "1.0.0",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"number-is-nan": "^1.0.0"
 					}
@@ -2757,6 +2764,7 @@
 					"version": "3.0.4",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"brace-expansion": "^1.1.7"
 					}
@@ -2764,12 +2772,14 @@
 				"minimist": {
 					"version": "0.0.8",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"minipass": {
 					"version": "2.2.4",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"safe-buffer": "^5.1.1",
 						"yallist": "^3.0.0"
@@ -2788,6 +2798,7 @@
 					"version": "0.5.1",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"minimist": "0.0.8"
 					}
@@ -2868,7 +2879,8 @@
 				"number-is-nan": {
 					"version": "1.0.1",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"object-assign": {
 					"version": "4.1.1",
@@ -2880,6 +2892,7 @@
 					"version": "1.4.0",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"wrappy": "1"
 					}
@@ -3001,6 +3014,7 @@
 					"version": "1.0.2",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"code-point-at": "^1.0.0",
 						"is-fullwidth-code-point": "^1.0.0",
diff --git a/package.json b/package.json
index d87bd99..9c7735d 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
 	"dependencies": {
 		"chalk": "^2.4.0",
 		"debug": "^3.1.0",
-		"filesize": "^3.6.1"
+		"filesize": "^4.0.0"
 	},
 	"repository": {
 		"type": "git",