diff --git a/stack.yaml b/stack.yaml
index f370da09..39788b13 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -16,4 +16,4 @@ packages:
 extra-deps:
 - engine-io-wai-1.0.2
 - control-monad-omega-0.3.1
-resolver: nightly-2015-10-08
+resolver: nightly-2016-01-19