diff --git a/README.md b/README.md
index 5f13ae7..1e7c1ea 100644
--- a/README.md
+++ b/README.md
@@ -177,7 +177,7 @@ Optional `opts` include:
   message: undefined, // a short message to associate with the deploy
   deployTimeout: 1.2e6, // 20 mins
   parallelHash: 100, // number of parallel hashing calls
-  parallelUpload: 15, // number of files to upload in parallel
+  parallelUpload: 5, // number of files to upload in parallel
   maxRetry: 5, // number of times to try on failed file uploads
   filter: filepath => { /* return false to filter a file  from the deploy */ },
   tmpDir: tempy.directory(), // a temporary directory to zip functions into
diff --git a/src/deploy/index.js b/src/deploy/index.js
index 83778cd..c78dc0d 100644
--- a/src/deploy/index.js
+++ b/src/deploy/index.js
@@ -20,7 +20,7 @@ module.exports = async (api, siteId, dir, opts) => {
       tmpDir: tempy.directory(),
       deployTimeout: 1.2e6, // local deploy timeout: 20 mins
       concurrentHash: 100, // concurrent file hash calls
-      concurrentUpload: 15, // Number of concurrent uploads
+      concurrentUpload: 5, // Number of concurrent uploads
       filter: defaultFilter,
       syncFileLimit: 100, // number of files
       maxRetry: 5, // number of times to retry an upload