diff --git a/src/files.js b/src/files.js
index aea63f4949cb05ea7070556a4c51b38b4c315f16..f50b81377405cd318f84378ae1560e1bd9bf0ca8 100644
--- a/src/files.js
+++ b/src/files.js
@@ -73,7 +73,11 @@ export async function fetchFileWithHeadersFromBaseUrl ({ path, baseUrl, version
       result.body = await gzip(result.body)
       result.headers['content-encoding'] = 'gzip'
     } else {
-      result.body = await brotliCompress(result.body)
+      result.body = await brotliCompress(result.body, {
+        params: {
+          [zlib.constants.BROTLI_PARAM_QUALITY]: 5
+        }
+      })
       result.headers['content-encoding'] = 'br'
     }
   }