diff --git a/yesod/scaffold/project.cabal.cg b/yesod/scaffold/project.cabal.cg
index 35e9a3cc..9a43e551 100644
--- a/yesod/scaffold/project.cabal.cg
+++ b/yesod/scaffold/project.cabal.cg
@@ -48,6 +48,7 @@ library
                 GADTs
                 GeneralizedNewtypeDeriving
                 FlexibleContexts
+                EmptyDataDecls
 
 executable         ~project~
     if flag(library-only)
@@ -72,6 +73,7 @@ executable         ~project~
                 GADTs
                 GeneralizedNewtypeDeriving
                 FlexibleContexts
+                EmptyDataDecls
 
     build-depends: base                          >= 4          && < 5
                  , yesod                         >= 0.10       && < 0.11