diff --git a/run-tasks.js b/run-tasks.js
index 9646e84dc2..a859f12fd7 100644
--- a/run-tasks.js
+++ b/run-tasks.js
@@ -43,7 +43,8 @@ function sass () {
   fs.readdirSync('app/assets/sass').forEach(file => {
     if (!file.endsWith('.scss')) return
 
-    const result = sass.compile('app/assets/sass/' + file, {
+    const result = sass.renderSync({
+      file: 'app/assets/sass/' + file,
       logger: sass.Logger.silent,
       loadPaths: [__dirname],
       sourceMap: true,