diff --git a/lib/index.js b/lib/index.js
index 3d35689..efa93b2 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -296,7 +296,7 @@ export default class Now extends EventEmitter {
             'Content-Length': data.length,
             'x-now-deployment-id': this._id,
             'x-now-sha': sha,
-            'x-now-file': names.map((name) => toRelative(name, this._path)).join(','),
+            'x-now-file': names.map((name) => toRelative(encodeURIComponent(name), this._path)).join(','),
             'x-now-size': data.length
           },
           body: stream