diff --git a/README.md b/README.md
index 8cdcfe2a6..85906d436 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Status](http://cpt-obvious.ethercasts.com:8010/buildstatusimage?builder=go-ether
 
 Ethereum Go Client © 2014 Jeffrey Wilcke.
 
-Current state: Proof of Concept 0.6.5.
+Current state: Proof of Concept 0.6.6.
 
 For the development package please see the [eth-go package](https://github.com/ethereum/eth-go).
 
diff --git a/ethereum/main.go b/ethereum/main.go
index df9737c1f..8cc043a4f 100644
--- a/ethereum/main.go
+++ b/ethereum/main.go
@@ -13,7 +13,7 @@ import (
 
 const (
 	ClientIdentifier = "Ethereum(G)"
-	Version          = "0.6.5"
+	Version          = "0.6.6"
 )
 
 var logger = ethlog.NewLogger("CLI")
diff --git a/mist/main.go b/mist/main.go
index 747616f8f..094246c1a 100644
--- a/mist/main.go
+++ b/mist/main.go
@@ -12,7 +12,7 @@ import (
 
 const (
 	ClientIdentifier = "Mist"
-	Version          = "0.6.5"
+	Version          = "0.6.6"
 )
 
 var ethereum *eth.Ethereum