diff --git a/sv2v.cabal b/sv2v.cabal
index a3f8def..26c9ecd 100644
--- a/sv2v.cabal
+++ b/sv2v.cabal
@@ -119,7 +119,7 @@ executable sv2v
     Paths_sv2v
   autogen-modules:
     Paths_sv2v
-  extensions:
+  default-extensions:
     PatternSynonyms
     TupleSections
   ghc-options: