diff --git a/ext/sundials b/ext/sundials
index 38aa03b990..b78e575639 160000
--- a/ext/sundials
+++ b/ext/sundials
@@ -1 +1 @@
-Subproject commit 38aa03b990e616db52acd053730c31fcc3eb91f9
+Subproject commit b78e575639babe99aea9a0558d0f64732d6d729e