src/Control/Monad/Trans/PagerDuty.hs+1
@@ -42,6 +42,7 @@ module Control.Monad.Trans.PagerDuty
4242 ) where
4343
4444import Control.Applicative
45+import Control.Monad
4546import Control.Monad.Base
4647import Control.Monad.Catch
4748import Control.Monad.Except (MonadError (..))