1 files changed, 1 insertions, 0 deletions
diff --git a/src/Language.hs b/src/Language.hs
index b61a497..a1b3d8b 100644
--- a/src/Language.hs
+++ b/src/Language.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE ExplicitForAll #-}
 {-# LANGUAGE OverloadedLabels #-}
+{-# LANGUAGE PolyKinds #-}
 {-# LANGUAGE TypeOperators #-}
 module Language (
   fromNamed,