1 files changed, 6 insertions, 0 deletions
diff --git a/app/Exception.hs b/app/Exception.hs
index a809616..41097b3 100644
--- a/app/Exception.hs
+++ b/app/Exception.hs
@@ -6,6 +6,7 @@ module Exception
     UnknownFileExtension (..),
     InvalidDiff (..),
     InvalidIssue (..),
+    CannotReadFile (..),
   )
 where
 
@@ -60,3 +61,8 @@ data InvalidIssue = InvalidIssue (P.ParseErrorBundle [D.Node] Void)
   deriving (Show)
 
 instance Exception InvalidIssue
+
+data CannotReadFile = CannotReadFile
+  deriving (Show)
+
+instance Exception CannotReadFile