diff --git a/pipes-bytestring.cabal b/pipes-bytestring.cabal
--- a/pipes-bytestring.cabal
+++ b/pipes-bytestring.cabal
@@ -1,5 +1,5 @@
 Name: pipes-bytestring
-Version: 2.1.3
+Version: 2.1.4
 Cabal-Version: >=1.8.0.2
 Build-Type: Simple
 License: BSD3
@@ -20,7 +20,7 @@
     Build-Depends:
         base         >= 4       && < 5   ,
         bytestring   >= 0.9.2.1 && < 0.11,
-        pipes        >= 4.0     && < 4.3 ,
+        pipes        >= 4.0     && < 4.4 ,
         pipes-group  >= 1.0.0   && < 1.1 ,
         pipes-parse  >= 3.0.0   && < 3.1 ,
         transformers >= 0.2.0.0 && < 0.6