diff --git a/package.json b/package.json
index 594f275..9ba5db2 100644
--- a/package.json
+++ b/package.json
@@ -41,10 +41,10 @@
     "gulp-pug-lint": "^0.1.6",
     "gulp-sass": "^3.1.0",
     "pdfkit": "^0.8.0",
-	"browser-sync": "^2.17.5",
     "request": "^2.79.0"
   },
   "devDependencies": {
+	"browser-sync": "^2.17.5",
     "gulp-gh-pages": "^0.5.4",
     "jsonlint": "^1.6.2"
   }
diff --git a/yarn.lock b/yarn.lock
index f873447..0873265 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1782,13 +1782,13 @@ gulp-pug@^3.1.0:
     pug ">=2.0.0-alpha <3"
     through2 "^2.0.0"
 
-gulp-sass@^2.3.2:
-  version "2.3.2"
-  resolved "https://npm.spatie.be/gulp-sass/-/gulp-sass-2.3.2.tgz#82b7ab90fe902cdc34c04f180d92f2c34902dd52"
+gulp-sass@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/gulp-sass/-/gulp-sass-3.1.0.tgz#53dc4b68a1f5ddfe4424ab4c247655269a8b74b7"
   dependencies:
     gulp-util "^3.0"
     lodash.clonedeep "^4.3.2"
-    node-sass "^3.4.2"
+    node-sass "^4.2.0"
     through2 "^2.0.0"
     vinyl-sourcemaps-apply "^0.2.0"
 
@@ -2435,6 +2435,10 @@ lodash.mapvalues@^4.4.0:
   version "4.6.0"
   resolved "https://npm.spatie.be/lodash.mapvalues/-/lodash.mapvalues-4.6.0.tgz#1bafa5005de9dd6f4f26668c30ca37230cc9689c"
 
+lodash.mergewith@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/lodash.mergewith/-/lodash.mergewith-4.6.0.tgz#150cf0a16791f5903b8891eab154609274bdea55"
+
 lodash.pick@^4.2.1:
   version "4.4.0"
   resolved "https://npm.spatie.be/lodash.pick/-/lodash.pick-4.4.0.tgz#52f05610fff9ded422611441ed1fc123a03001b3"
@@ -2669,9 +2673,9 @@ node-pre-gyp@^0.6.29:
     tar "~2.2.1"
     tar-pack "~3.3.0"
 
-node-sass@^3.4.2:
-  version "3.13.0"
-  resolved "https://npm.spatie.be/node-sass/-/node-sass-3.13.0.tgz#d08b95bdebf40941571bd2c16a9334b980f8924f"
+node-sass@^4.2.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/node-sass/-/node-sass-4.3.0.tgz#d014f64595d77b26af99e9f7a7e74704d9976bda"
   dependencies:
     async-foreach "^0.1.3"
     chalk "^1.1.1"
@@ -2682,6 +2686,7 @@ node-sass@^3.4.2:
     in-publish "^2.0.0"
     lodash.assign "^4.2.0"
     lodash.clonedeep "^4.3.2"
+    lodash.mergewith "^4.6.0"
     meow "^3.7.0"
     mkdirp "^0.5.1"
     nan "^2.3.2"
@@ -2689,6 +2694,7 @@ node-sass@^3.4.2:
     npmlog "^4.0.0"
     request "^2.61.0"
     sass-graph "^2.1.1"
+    stdout-stream "^1.4.0"
 
 node-uuid@~1.4.3:
   version "1.4.7"
@@ -3437,14 +3443,14 @@ sass-graph@^2.1.1:
     lodash "^4.0.0"
     yargs "^4.7.1"
 
-"semver@2 || 3 || 4 || 5", "semver@2.x || 3.x || 4 || 5", semver@^4.1.0:
-  version "4.3.6"
-  resolved "https://npm.spatie.be/semver/-/semver-4.3.6.tgz#300bc6e0e86374f7ba61068b5b1ecd57fc6532da"
-
-semver@~5.3.0:
+"semver@2 || 3 || 4 || 5", "semver@2.x || 3.x || 4 || 5", semver@~5.3.0:
   version "5.3.0"
   resolved "https://npm.spatie.be/semver/-/semver-5.3.0.tgz#9b2ce5d3de02d17c6012ad326aa6b4d0cf54f94f"
 
+semver@^4.1.0:
+  version "4.3.6"
+  resolved "https://npm.spatie.be/semver/-/semver-4.3.6.tgz#300bc6e0e86374f7ba61068b5b1ecd57fc6532da"
+
 send@0.14.1:
   version "0.14.1"
   resolved "https://npm.spatie.be/send/-/send-0.14.1.tgz#a954984325392f51532a7760760e459598c89f7a"
@@ -3661,6 +3667,12 @@ static-module@^1.1.0:
   version "1.3.1"
   resolved "https://npm.spatie.be/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
 
+stdout-stream@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/stdout-stream/-/stdout-stream-1.4.0.tgz#a2c7c8587e54d9427ea9edb3ac3f2cd522df378b"
+  dependencies:
+    readable-stream "^2.0.1"
+
 stream-consume@~0.1.0:
   version "0.1.0"
   resolved "https://npm.spatie.be/stream-consume/-/stream-consume-0.1.0.tgz#a41ead1a6d6081ceb79f65b061901b6d8f3d1d0f"