diff --git a/package-lock.json b/package-lock.json
index 3019add1..e76bcc53 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -807,9 +807,9 @@
       "dev": true
     },
     "concat-with-sourcemaps": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/concat-with-sourcemaps/-/concat-with-sourcemaps-1.0.5.tgz",
-      "integrity": "sha512-YtnS0VEY+e2Khzsey/6mra9EoM6h/5gxaC0e3mcHpA5yfDxafhygytNmcJWodvUgyXzSiL5MSkPO6bQGgfliHw==",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/concat-with-sourcemaps/-/concat-with-sourcemaps-1.1.0.tgz",
+      "integrity": "sha512-4gEjHJFT9e+2W/77h/DS5SGUgwDaOwprX8L/gl5+3ixnzkVJJsZWDSelmN3Oilw3LNDZjZV0yqH1hLG3k6nghg==",
       "dev": true,
       "requires": {
         "source-map": "^0.6.1"
@@ -874,23 +874,17 @@
       }
     },
     "css": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/css/-/css-2.2.1.tgz",
-      "integrity": "sha1-c6TIHehdtmTU7mdPfUcIXjstVdw=",
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/css/-/css-2.2.3.tgz",
+      "integrity": "sha512-0W171WccAjQGGTKLhw4m2nnl0zPHUlTO/I8td4XzJgIB8Hg3ZZx71qT4G4eX8OVsSiaAKiUMy73E3nsbPlg2DQ==",
       "dev": true,
       "requires": {
         "inherits": "^2.0.1",
         "source-map": "^0.1.38",
-        "source-map-resolve": "^0.3.0",
+        "source-map-resolve": "^0.5.1",
         "urix": "^0.1.0"
       },
       "dependencies": {
-        "atob": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/atob/-/atob-1.1.3.tgz",
-          "integrity": "sha1-lfE2KbEsOlGl0hWr3OKqnzL4B3M=",
-          "dev": true
-        },
         "source-map": {
           "version": "0.1.43",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.1.43.tgz",
@@ -899,24 +893,6 @@
           "requires": {
             "amdefine": ">=0.0.4"
           }
-        },
-        "source-map-resolve": {
-          "version": "0.3.1",
-          "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.3.1.tgz",
-          "integrity": "sha1-YQ9hIqRFuN1RU1oqcbeD38Ekh2E=",
-          "dev": true,
-          "requires": {
-            "atob": "~1.1.0",
-            "resolve-url": "~0.2.1",
-            "source-map-url": "~0.3.0",
-            "urix": "~0.1.0"
-          }
-        },
-        "source-map-url": {
-          "version": "0.3.0",
-          "resolved": "https://registry.npmjs.org/source-map-url/-/source-map-url-0.3.0.tgz",
-          "integrity": "sha1-fsrxO1e80J2opAxdJp2zN5nUqvk=",
-          "dev": true
         }
       }
     },