diff --git a/library/Potoki/Prelude.hs b/library/Potoki/Prelude.hs
--- a/library/Potoki/Prelude.hs
+++ b/library/Potoki/Prelude.hs
@@ -42,10 +42,6 @@
 -------------------------
 import Data.Hashable as Exports (Hashable)
 
--- bug
--------------------------
-import Bug as Exports
-
 --------------------------------------------------------------------------------
 
 import qualified Data.Text as A
diff --git a/potoki.cabal b/potoki.cabal
--- a/potoki.cabal
+++ b/potoki.cabal
@@ -1,7 +1,7 @@
 name:
   potoki
 version:
-  0.6.4
+  0.6.5
 synopsis:
   Simple streaming in IO
 description:
@@ -76,7 +76,6 @@
     attoparsec >=0.13 && <0.15,
     base >=4.7 && <5,
     base-prelude <2,
-    bug >=1 && <2,
     bytestring ==0.10.*,
     directory >=1.3 && <2,
     foldl >=1.3 && <2,