diff --git a/spack b/spack
index 8e40b08ee..b1f29d9c8 160000
--- a/spack
+++ b/spack
@@ -1 +1 @@
-Subproject commit 8e40b08ee6e321181d6dd0c0c926e4f406d7fa85
+Subproject commit b1f29d9c8105f36390e6e8f0178ab6e6005b30d6