diff --git a/network-bitcoin.cabal b/network-bitcoin.cabal
--- a/network-bitcoin.cabal
+++ b/network-bitcoin.cabal
@@ -1,5 +1,5 @@
 Name:                network-bitcoin
-Version:             1.2.2
+Version:             1.3.0
 Synopsis:            An interface to bitcoind.
 Description:
     This can be used to send Bitcoins, query balances, etc.  It
@@ -47,9 +47,9 @@
     Network.Bitcoin.RawTransaction
     Network.Bitcoin.Types
     Network.Bitcoin.Wallet
-  
-  Build-depends:       
-    aeson == 0.6.*,
+
+  Build-depends:
+    aeson >= 0.6.1 && < 0.7,
     bytestring >= 0.9 && < 0.11,
     attoparsec == 0.10.*,
     unordered-containers >= 0.2,
@@ -58,7 +58,7 @@
     text >= 0.11,
     vector >= 0.10,
     base == 4.*
-  
+
 Source-repository head
     type: git
     location: git://github.com/wowus/network-bitcoin.git