diff --git a/semantic-python/src/Language/Python/Core.hs b/semantic-python/src/Language/Python/Core.hs
index dde03227e..7abefce5c 100644
--- a/semantic-python/src/Language/Python/Core.hs
+++ b/semantic-python/src/Language/Python/Core.hs
@@ -2,10 +2,11 @@ module Language.Python.Core
 ( compileModule
 ) where
 
-import Control.Applicative
+import Control.Monad.Fail
 import Data.Core as Core
+import Prelude hiding (fail)
 import TreeSitter.Python.AST as Py
 
-compileModule :: Alternative m => Py.Module -> m Core
+compileModule :: MonadFail m => Py.Module -> m Core
 compileModule (Module Nothing) = pure Unit
 compileModule (Module (Just _)) = pure Unit