diff --git a/contrib/nginx/Dockerfile b/contrib/nginx/Dockerfile
index 3fe424aa..82b6b1e6 100644
--- a/contrib/nginx/Dockerfile
+++ b/contrib/nginx/Dockerfile
@@ -1,7 +1,6 @@
-FROM node:8-alpine as themes
+FROM node:10-alpine as themes
 WORKDIR /app
-RUN apk add --no-cache yarn
-COPY .babelrc .browserslistrc package.json webpack.config.js /app/
+COPY .babelrc .browserslistrc package.json webpack.config.js yarn.lock /app/
 RUN yarn install
 COPY resources/assets/ /app/resources/assets
 RUN yarn build
diff --git a/package.json b/package.json
index c60f039e..5a8a5a44 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "file-loader": "^2.0.0",
     "imports-loader": "^0.8.0",
     "less": "^3.9.0",
-    "less-loader": "^4.0.5",
+    "less-loader": "^5",
     "mini-css-extract-plugin": "^0.4.5",
     "mkdirp": "^0.5.1",
     "npm-run-all": "^4.1.3",