diff --git a/src/GitHub/Data/Webhooks/Payload.hs b/src/GitHub/Data/Webhooks/Payload.hs
index a6c8c33..c342ce6 100644
--- a/src/GitHub/Data/Webhooks/Payload.hs
+++ b/src/GitHub/Data/Webhooks/Payload.hs
@@ -59,8 +59,11 @@ import           GHC.Generics             (Generic)
 
 -- Types lifted from the @github@ package.
 
--- | Represents the owner of the repository.
-data OwnerType = OwnerUser | OwnerOrganization
+-- | Represents the owner of a repository, pull request or similar.
+--
+-- A bot is a "special type of user which takes actions on behalf of GitHub Apps".
+-- See also https://developer.github.com/v4/object/bot/
+data OwnerType = OwnerUser | OwnerOrganization | OwnerBot
     deriving (Eq, Ord, Enum, Bounded, Show, Read, Generic, Typeable, Data)
 
 instance NFData OwnerType
@@ -70,6 +73,7 @@ instance FromJSON OwnerType where
       case T.toLower t of
           "user"          -> pure OwnerUser
           "organization"  -> pure OwnerOrganization
+          "bot"           -> pure OwnerBot
           _               -> fail $ "Unknown owner type: " ++ T.unpack t