diff --git a/spack b/spack
index b629a8817..493faaed0 160000
--- a/spack
+++ b/spack
@@ -1 +1 @@
-Subproject commit b629a8817832bd344ce421287e2d2e06e01873e4
+Subproject commit 493faaed0dc02498e04bc2ec44265ff71b78d224