diff --git a/tpl/spack b/tpl/spack
index 95e3436f..b85c31f9 160000
--- a/tpl/spack
+++ b/tpl/spack
@@ -1 +1 @@
-Subproject commit 95e3436f6b2a05822264a2dd3d8b269c6aa9576e
+Subproject commit b85c31f946e4845d3d6efcc161bc50032f197174