diff --git a/package-lock.json b/package-lock.json
index 190ffe0..7315d9e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -807,30 +807,31 @@
       }
     },
     "@gulp-sourcemaps/identity-map": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/@gulp-sourcemaps/identity-map/-/identity-map-1.0.2.tgz",
-      "integrity": "sha512-ciiioYMLdo16ShmfHBXJBOFm3xPC4AuwO4xeRpFeHz7WK9PYsWCmigagG2XyzZpubK4a3qNKoUBDhbzHfa50LQ==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/@gulp-sourcemaps/identity-map/-/identity-map-2.0.1.tgz",
+      "integrity": "sha512-Tb+nSISZku+eQ4X1lAkevcQa+jknn/OVUgZ3XCxEKIsLsqYuPoJwJOPQeaOk75X3WPftb29GWY1eqE7GLsXb1Q==",
       "requires": {
-        "acorn": "^5.0.3",
-        "css": "^2.2.1",
-        "normalize-path": "^2.1.1",
+        "acorn": "^6.4.1",
+        "normalize-path": "^3.0.0",
+        "postcss": "^7.0.16",
         "source-map": "^0.6.0",
-        "through2": "^2.0.3"
+        "through2": "^3.0.1"
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+          "version": "6.4.2",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+          "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ=="
+        },
+        "normalize-path": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
+          "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA=="
+        },
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           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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-        },
-        "through2": {
-          "version": "2.0.5",
-          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
-          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
-          "requires": {
-            "readable-stream": "~2.3.6",
-            "xtend": "~4.0.1"
-          }
         }
       }
     },
@@ -2153,20 +2154,28 @@
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     },
     "css": {
-      "version": "2.2.4",
-      "resolved": "https://registry.npmjs.org/css/-/css-2.2.4.tgz",
-      "integrity": "sha512-oUnjmWpy0niI3x/mPL8dVEI1l7MnG3+HHyRPHf+YFSbK+svOhXpmSOcDURUh2aOCgl2grzrOPt1nHLuCVFULLw==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/css/-/css-3.0.0.tgz",
+      "integrity": "sha512-DG9pFfwOrzc+hawpmqX/dHYHJG+Bsdb0klhyi1sDneOgGOXy9wQIC8hzyVp1e4NRYDBdxcylvywPkkXCHAzTyQ==",
       "requires": {
-        "inherits": "^2.0.3",
+        "inherits": "^2.0.4",
         "source-map": "^0.6.1",
-        "source-map-resolve": "^0.5.2",
-        "urix": "^0.1.0"
+        "source-map-resolve": "^0.6.0"
       },
       "dependencies": {
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
           "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        },
+        "source-map-resolve": {
+          "version": "0.6.0",
+          "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.6.0.tgz",
+          "integrity": "sha512-KXBr9d/fO/bWo97NXsPIAW1bFSBOuCnjbNTBMO7N59hsv5i9yzRDfcYwwt0l04+VqnKC+EwzvJZIP/qkuMgR/w==",
+          "requires": {
+            "atob": "^2.1.2",
+            "decode-uri-component": "^0.2.0"
+          }
         }
       }
     },
@@ -3628,22 +3637,22 @@
           "bundled": true,
           "optional": true
         },
-        "string-width": {
-          "version": "1.0.2",
+        "string_decoder": {
+          "version": "1.1.1",
           "bundled": true,
           "optional": true,
           "requires": {
-            "code-point-at": "^1.0.0",
-            "is-fullwidth-code-point": "^1.0.0",
-            "strip-ansi": "^3.0.0"
+            "safe-buffer": "~5.1.0"
           }
         },
-        "string_decoder": {
-          "version": "1.1.1",
+        "string-width": {
+          "version": "1.0.2",
           "bundled": true,
           "optional": true,
           "requires": {
-            "safe-buffer": "~5.1.0"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
         },
         "strip-ansi": {
@@ -4394,23 +4403,28 @@
       }
     },
     "gulp-sourcemaps": {
-      "version": "2.6.5",
-      "resolved": "https://registry.npmjs.org/gulp-sourcemaps/-/gulp-sourcemaps-2.6.5.tgz",
-      "integrity": "sha512-SYLBRzPTew8T5Suh2U8jCSDKY+4NARua4aqjj8HOysBh2tSgT9u4jc1FYirAdPx1akUxxDeK++fqw6Jg0LkQRg==",
-      "requires": {
-        "@gulp-sourcemaps/identity-map": "1.X",
-        "@gulp-sourcemaps/map-sources": "1.X",
-        "acorn": "5.X",
-        "convert-source-map": "1.X",
-        "css": "2.X",
-        "debug-fabulous": "1.X",
-        "detect-newline": "2.X",
-        "graceful-fs": "4.X",
-        "source-map": "~0.6.0",
-        "strip-bom-string": "1.X",
-        "through2": "2.X"
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/gulp-sourcemaps/-/gulp-sourcemaps-3.0.0.tgz",
+      "integrity": "sha512-RqvUckJkuYqy4VaIH60RMal4ZtG0IbQ6PXMNkNsshEGJ9cldUPRb/YCgboYae+CLAs1HQNb4ADTKCx65HInquQ==",
+      "requires": {
+        "@gulp-sourcemaps/identity-map": "^2.0.1",
+        "@gulp-sourcemaps/map-sources": "^1.0.0",
+        "acorn": "^6.4.1",
+        "convert-source-map": "^1.0.0",
+        "css": "^3.0.0",
+        "debug-fabulous": "^1.0.0",
+        "detect-newline": "^2.0.0",
+        "graceful-fs": "^4.0.0",
+        "source-map": "^0.6.0",
+        "strip-bom-string": "^1.0.0",
+        "through2": "^2.0.0"
       },
       "dependencies": {
+        "acorn": {
+          "version": "6.4.2",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+          "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ=="
+        },
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -7688,6 +7702,14 @@
         }
       }
     },
+    "string_decoder": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
+    },
     "string-width": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
@@ -7698,14 +7720,6 @@
         "strip-ansi": "^3.0.0"
       }
     },
-    "string_decoder": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-      "requires": {
-        "safe-buffer": "~5.1.0"
-      }
-    },
     "strip-ansi": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
diff --git a/package.json b/package.json
index 726f0d3..3f0050c 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "gulp-rename": "2.0.0",
     "gulp-sass": "4.0.2",
     "gulp-sass-lint": "1.4.0",
-    "gulp-sourcemaps": "2.6.5",
+    "gulp-sourcemaps": "3.0.0",
     "gulp-strip-comments": "2.5.2",
     "gulp-uglify": "3.0.2",
     "is-valid-glob": "1.0.0",