diff --git a/MANIFEST.in b/MANIFEST.in
index 04dec48..43393ee 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -6,4 +6,4 @@ recursive-include vendor/libuv *
 recursive-exclude vendor/libuv/.git *
 recursive-exclude vendor/libuv/docs *
 recursive-exclude vendor/libuv/img *
-include LICENSE README.rst Makefile
+include LICENSE README.rst Makefile performance.png