diff --git a/vendor/fastsum b/vendor/fastsum
index dbeff0af5..f901e0f64 160000
--- a/vendor/fastsum
+++ b/vendor/fastsum
@@ -1 +1 @@
-Subproject commit dbeff0af57fcea85bca07ff5a8149301dd3b084c
+Subproject commit f901e0f644a83b1614ff865b263434852ddc9d36