diff --git a/stack.yaml b/stack.yaml
index d937ae82f4..be0033f288 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -28,4 +28,4 @@ packages:
 - '.'
 extra-deps:
 - Win32-extras-0.2.0.1
-resolver: lts-3.7
+resolver: nightly-2015-12-28