diff --git a/package-lock.json b/package-lock.json
index 5c31f3381..bffff24b3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -107,7 +107,7 @@
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@@ -179,6 +179,14 @@
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-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY="
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+        "get-value": "^2.0.6",
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@@ -271,6 +333,17 @@
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+        "process-nextick-args": "^2.0.0",
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@@ -291,6 +364,14 @@
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@@ -320,6 +401,22 @@
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@@ -413,11 +510,6 @@
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@@ -579,6 +681,15 @@
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+      "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
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@@ -5371,6 +5403,15 @@
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@@ -5414,6 +5455,14 @@
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+      "resolved": "https://registry.npmjs.org/undertaker/-/undertaker-1.3.0.tgz",
+      "integrity": "sha512-/RXwi5m/Mu3H6IHQGww3GNt1PNXlbeCuclF2QYR14L/2CHPz3DFZkvB5hZ0N/QUkiXWCACML2jXViIQEQc2MLg==",
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+        "arr-map": "^2.0.0",
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+      "resolved": "https://registry.npmjs.org/undertaker-registry/-/undertaker-registry-1.0.1.tgz",
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@@ -5527,9 +5603,13 @@
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-      "integrity": "sha1-1ZpKdUJ0R9mqbJHnAmP40mpLEEs="
+      "version": "2.3.1",
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@@ -5631,11 +5706,11 @@
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-      "integrity": "sha1-qrGh+jDUX4jdMhFIh1rALAtV5bQ=",
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       "requires": {
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+        "homedir-polyfill": "^1.0.1"
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     "validate-npm-package-license": {
@@ -5647,6 +5722,11 @@
         "spdx-expression-parse": "^3.0.0"
       }
     },
+    "value-or-function": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/value-or-function/-/value-or-function-3.0.0.tgz",
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       "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
@@ -5658,89 +5738,62 @@
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-      "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.5.3.tgz",
-      "integrity": "sha1-sEVbOPxeDPMNQyUTLkYZcMIJHN4=",
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-        "clone-stats": "^0.0.1",
-        "replace-ext": "0.0.1"
+        "clone": "^2.1.1",
+        "clone-buffer": "^1.0.0",
+        "clone-stats": "^1.0.0",
+        "cloneable-readable": "^1.0.0",
+        "remove-trailing-separator": "^1.0.1",
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-        "mkdirp": "^0.5.0",
-        "strip-bom": "^1.0.0",
-        "through2": "^0.6.1",
-        "vinyl": "^0.4.0"
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/vinyl-fs/-/vinyl-fs-3.0.3.tgz",
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+        "graceful-fs": "^4.0.0",
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+        "lazystream": "^1.0.0",
+        "lead": "^1.0.0",
+        "object.assign": "^4.0.4",
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+      "resolved": "https://registry.npmjs.org/vinyl-sourcemap/-/vinyl-sourcemap-1.1.0.tgz",
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-          "integrity": "sha1-LzVsh6VQolVGHza76ypbqL94SEc=",
+        "normalize-path": {
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diff --git a/package.json b/package.json
index 3451c49db..2335733c2 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"dependencies": {
 		"browser-sync": "^2.26.3",
-		"gulp": "^3.9.0",
+		"gulp": "^4.0.2",
 		"gulp-changed": "^3.2.0",
 		"gulp-sass": "^4.0.2",
 		"gulp-sourcemaps": "^2.6.4",