diff --git a/stack.yaml b/stack.yaml
index 4d2efbe56a..cb7a573a30 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -19,7 +19,7 @@ flags:
     ekg: false
 packages:
 - '.'
-resolver: lts-5.0
+resolver: lts-5.5
 extra-deps:
 - mountpoints-1.0.1
 - disk-free-space-0.1.0.1