diff --git a/package-lock.json b/package-lock.json
index 64682c4..2b59090 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -912,9 +912,9 @@
             }
         },
         "extend": {
-            "version": "3.0.1",
-            "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
-            "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
+            "version": "3.0.2",
+            "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+            "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==",
             "dev": true
         },
         "extend-shallow": {
@@ -1422,7 +1422,8 @@
                 "ansi-regex": {
                     "version": "2.1.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "aproba": {
                     "version": "1.2.0",
@@ -1837,7 +1838,8 @@
                 "safe-buffer": {
                     "version": "5.1.1",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "safer-buffer": {
                     "version": "2.1.2",
@@ -1893,6 +1895,7 @@
                     "version": "3.0.1",
                     "bundled": true,
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "ansi-regex": "^2.0.0"
                     }
@@ -1936,12 +1939,14 @@
                 "wrappy": {
                     "version": "1.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 },
                 "yallist": {
                     "version": "3.0.2",
                     "bundled": true,
-                    "dev": true
+                    "dev": true,
+                    "optional": true
                 }
             }
         },