diff --git a/src/Postlude.hs b/src/Postlude.hs
index 46a46ed..e1368de 100644
--- a/src/Postlude.hs
+++ b/src/Postlude.hs
@@ -38,6 +38,7 @@ import Control.Monad.Trans as X
 
 import Control.Monad.Trans.Except as X
   ( ExceptT (..)
+  , runExceptT
   )
 
 import Control.Monad.Trans.Maybe as X