diff --git a/composer.json b/composer.json
index 23b9ec0d0a12614665b52e1fe67adfb8f23cca15..62860d08fb68924177c3cd565c276b6d5833358a 100644
--- a/composer.json
+++ b/composer.json
@@ -176,7 +176,29 @@
     },
     "theme-d8-sass": {
       "project_name": "mytheme",
-      "bower_assets_global": true
+      "bower_assets": {
+        "global": true,
+        "fonts": {
+          "bootstrap-sass": {
+            "src": "bootstrap-sass/assets/fonts/bootstrap",
+            "dest": "bootstrap"
+          },
+          "flat-ui-sass": {
+            "src": "flat-ui-sass/vendor/assets/fonts/flat-ui",
+            "dest": "flat-ui"
+          },
+          "fontawesome": {
+            "src": "fontawesome/fonts",
+            "dest": ""
+          }
+        },
+        "sass": {
+          "bootstrap-sass": "bootstrap-sass/assets/stylesheets",
+          "flat-ui-sass": "flat-ui-sass/vendor/assets/stylesheets",
+          "fontawesome": "fontawesome/scss",
+          "animate-sass": "animate-sass"
+        }
+      }
     },
     "patches": {
       "drupal/core": {