diff --git a/indexation.cabal b/indexation.cabal
--- a/indexation.cabal
+++ b/indexation.cabal
@@ -1,7 +1,7 @@
 name:
   indexation
 version:
-  0.3
+  0.3.0.1
 category:
   Data
 synopsis:
@@ -15,7 +15,7 @@
 author:
   Nikita Volkov <nikita.y.volkov@mail.ru>
 maintainer:
-  Metrix Ninjas <ninjas@metrix.ai>
+  Metrix Tech Team <tech@metrix.ai>
 copyright:
   (c) 2018, Metrix.AI
 license:
diff --git a/library/Indexation/IO.hs b/library/Indexation/IO.hs
--- a/library/Indexation/IO.hs
+++ b/library/Indexation/IO.hs
@@ -61,7 +61,7 @@
 readEntitiesAmountFromEntityTableFile :: FilePath -> IO (Either IOException Int)
 readEntitiesAmountFromEntityTableFile filePath =
   try $ do
-    bytes <- withFile filePath ReadMode (flip ByteString.hGet 4)
+    bytes <- withFile filePath ReadMode (flip ByteString.hGet 8)
     Cereal.runGet Cereal.getInt64le bytes & \ case
       Right x -> return (fromIntegral x)
       Left x -> error ("Unexpected binary parsing error: " <> x)