diff --git a/spack b/spack
index 65556eb5..b8d15e81 160000
--- a/spack
+++ b/spack
@@ -1 +1 @@
-Subproject commit 65556eb53e184e78aaacce2a9e325ea4507bca2c
+Subproject commit b8d15e816bf7388774e65ca59daf3831b4fa4180