diff --git a/package-lock.json b/package-lock.json
index eda860f1..bbf78a38 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2383,8 +2383,8 @@
 				"@babel/template": "7.0.0-beta.51",
 				"@babel/traverse": "7.0.0-beta.51",
 				"@babel/types": "7.0.0-beta.51",
-				"istanbul-lib-coverage": "2.0.5",
-				"semver": "5.7.0"
+				"istanbul-lib-coverage": "^2.0.1",
+				"semver": "^5.5.0"
 			}
 		},
 		"js-tokens": {
@@ -2992,6 +2992,7 @@
 					"version": "0.1.4",
 					"bundled": true,
 					"dev": true,
+					"optional": true,
 					"requires": {
 						"kind-of": "3.2.2",
 						"longest": "1.0.1",
@@ -3934,7 +3935,8 @@
 				"longest": {
 					"version": "1.0.1",
 					"bundled": true,
-					"dev": true
+					"dev": true,
+					"optional": true
 				},
 				"lru-cache": {
 					"version": "4.1.3",