diff --git a/zcash-haskell.cabal b/zcash-haskell.cabal
index 058058e..ad2e0d3 100644
--- a/zcash-haskell.cabal
+++ b/zcash-haskell.cabal
@@ -75,4 +75,4 @@ test-suite zcash-haskell-test
     , text
     , zcash-haskell
   pkgconfig-depends: rustzcash_wrapper
-  default-language: Haskell2012
+  default-language: Haskell2010