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-rw-r--r--src/Data/Dependent/EnumMap/Strict/Internal.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/Data/Dependent/EnumMap/Strict/Internal.hs b/src/Data/Dependent/EnumMap/Strict/Internal.hs
index 7c94f89..17de2fd 100644
--- a/src/Data/Dependent/EnumMap/Strict/Internal.hs
+++ b/src/Data/Dependent/EnumMap/Strict/Internal.hs
@@ -1,4 +1,5 @@
{-# LANGUAGE ExistentialQuantification #-}
+{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}