diff --git a/stack.yaml b/stack.yaml
index 9a0580c4e..9d7d41be2 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -11,7 +11,8 @@ packages:
 
 resolver: lts-4.1  # or newer
 
-# extra-deps:
+extra-deps:
+- servant-swagger-0.1
 
 # ghc-options:
 #   rtsopts: