diff --git a/stack.yaml b/stack.yaml
index 346ba7a475..d7d9dba6e9 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -19,10 +19,8 @@ flags:
     ekg: false
 packages:
 - '.'
-resolver: lts-5.5
+resolver: lts-5.18
 extra-deps:
-- mountpoints-1.0.1
-- disk-free-space-0.1.0.1
 - process-1.3.0.0
 explicit-setup-deps:
   git-annex: true