diff --git a/stack.yaml b/stack.yaml
index 6d9769e..fdcb756 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -2,5 +2,5 @@ flags: {}
 packages:
 - '.'
 extra-deps:
-- cabal-helper-0.6.1.0
-resolver: lts-3.1
+- cabal-helper-0.6.2.0
+resolver: lts-3.20