diff --git a/vendor/fastsum b/vendor/fastsum
index 14e298309..787af0d3d 160000
--- a/vendor/fastsum
+++ b/vendor/fastsum
@@ -1 +1 @@
-Subproject commit 14e29830994ae76e479a83b3ee97cf14254f66c4
+Subproject commit 787af0d3d5852505d2e4862b9d2890b4e9073cd2