diff --git a/stack.yaml b/stack.yaml
index be8f9f2d6..2dc4d15b6 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -4,4 +4,8 @@ packages:
 extra-deps: 
   - Ranged-sets-0.3.0
   - packdeps-0.4.1
-resolver: lts-3.7
+  - hspec-2.2.0
+  - hspec-core-2.2.0
+  - hspec-discover-2.2.0
+  - hspec-expectations-0.7.2
+resolver: lts-3.10