diff --git a/demo/package.json b/demo/package.json
index b9289de..7efc9e0 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -15,7 +15,7 @@
     "cross-env": "^3.0.0",
     "css-loader": "^0.25.0",
     "file-loader": "^0.9.0",
-    "node-sass": "^4.5.0",
+    "node-sass": "^4.13.1",
     "sass-loader": "^5.0.1",
     "vue-loader": "^11.1.4",
     "vue-template-compiler": "^2.2.1",
diff --git a/demo/yarn.lock b/demo/yarn.lock
index 149f0ef..2480eed 100644
--- a/demo/yarn.lock
+++ b/demo/yarn.lock
@@ -3130,10 +3130,10 @@ lodash.words@^3.0.0:
   dependencies:
     lodash._root "^3.0.0"
 
-lodash@^4.0.0, lodash@^4.17.11, lodash@^4.17.14, lodash@^4.17.4, lodash@~4.17.10:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+lodash@^4.0.0, lodash@^4.17.11, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.4, lodash@~4.17.10:
+  version "4.17.20"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
+  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
 
 loglevel@^1.4.1:
   version "1.6.4"
@@ -3481,10 +3481,10 @@ node-pre-gyp@^0.12.0:
     semver "^5.3.0"
     tar "^4"
 
-node-sass@^4.5.0:
-  version "4.12.0"
-  resolved "https://registry.yarnpkg.com/node-sass/-/node-sass-4.12.0.tgz#0914f531932380114a30cc5fa4fa63233a25f017"
-  integrity sha512-A1Iv4oN+Iel6EPv77/HddXErL2a+gZ4uBeZUy+a8O35CFYTXhgA8MgLCWBtwpGZdCvTvQ9d+bQxX/QC36GDPpQ==
+node-sass@^4.13.1:
+  version "4.13.1"
+  resolved "https://registry.yarnpkg.com/node-sass/-/node-sass-4.13.1.tgz#9db5689696bb2eec2c32b98bfea4c7a2e992d0a3"
+  integrity sha512-TTWFx+ZhyDx1Biiez2nB0L3YrCZ/8oHagaDalbuBSlqXgUPsdkUSzJsVxeDO9LtPB49+Fh3WQl3slABo6AotNw==
   dependencies:
     async-foreach "^0.1.3"
     chalk "^1.1.1"
@@ -3493,7 +3493,7 @@ node-sass@^4.5.0:
     get-stdin "^4.0.1"
     glob "^7.0.3"
     in-publish "^2.0.0"
-    lodash "^4.17.11"
+    lodash "^4.17.15"
     meow "^3.7.0"
     mkdirp "^0.5.1"
     nan "^2.13.2"