diff --git a/package.json b/package.json
index 580827e..c33f1c0 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   "devDependencies": {
     "browser-sync": "2.11.0",
     "cross-env": "1.0.7",
-    "lanyon": "0.0.15",
+    "lanyon": "0.0.19",
     "nodemon": "1.8.1",
     "npm-run-all": "2.1.1"
   }
diff --git a/yarn.lock b/yarn.lock
index 33fc055..cb9e0c7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1443,7 +1443,7 @@ concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
 
-concat-stream@:
+concat-stream@, concat-stream@^1.4.7:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.5.2.tgz#708978624d856af41a5a741defdd261da752c266"
   dependencies:
@@ -3150,9 +3150,9 @@ klaw@^1.0.0:
   optionalDependencies:
     graceful-fs "^4.1.9"
 
-lanyon@0.0.15:
-  version "0.0.15"
-  resolved "https://registry.yarnpkg.com/lanyon/-/lanyon-0.0.15.tgz#fe9afe8d875377bcdf2a3b7b0efada96a0cedd86"
+lanyon@0.0.19:
+  version "0.0.19"
+  resolved "https://registry.yarnpkg.com/lanyon/-/lanyon-0.0.19.tgz#378893915b4bad59c7cc06f3ff8e8cbf3791e228"
   dependencies:
     autoprefixer "6.5.3"
     babel-core "6.18.2"
@@ -3194,6 +3194,7 @@ lanyon@0.0.15:
     sass-loader "4.0.2"
     semver "5.3.0"
     shelljs "0.7.5"
+    spawn-sync "^1.0.15"
     style-loader "0.13.1"
     url-loader "0.5.7"
     webpack "1.13.3"
@@ -4028,6 +4029,10 @@ os-locale@^1.4.0:
   dependencies:
     lcid "^1.0.0"
 
+os-shim@^0.1.2:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/os-shim/-/os-shim-0.1.3.tgz#6b62c3791cf7909ea35ed46e17658bb417cb3917"
+
 os-tmpdir@^1.0.0, os-tmpdir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
@@ -5311,6 +5316,13 @@ source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.0, sour
   version "0.5.6"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"
 
+spawn-sync@^1.0.15:
+  version "1.0.15"
+  resolved "https://registry.yarnpkg.com/spawn-sync/-/spawn-sync-1.0.15.tgz#b00799557eb7fb0c8376c29d44e8a1ea67e57476"
+  dependencies:
+    concat-stream "^1.4.7"
+    os-shim "^0.1.2"
+
 spdx-correct@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/spdx-correct/-/spdx-correct-1.0.2.tgz#4b3073d933ff51f3912f03ac5519498a4150db40"