diff --git a/DLLVersion.rc b/DLLVersion.rc
index 4667f3d3c..e4aec7833 100644
--- a/DLLVersion.rc
+++ b/DLLVersion.rc
@@ -4,8 +4,8 @@
 
 #include "winres.h"
 
-#define POCO_VERSION 1,5,4,0
-#define POCO_VERSION_STR "1.5.4"
+#define POCO_VERSION 1,6,0,0
+#define POCO_VERSION_STR "1.6.0d1"
 
 VS_VERSION_INFO VERSIONINFO
  FILEVERSION POCO_VERSION
diff --git a/Foundation/include/Poco/Version.h b/Foundation/include/Poco/Version.h
index 927be89b0..319beebb5 100644
--- a/Foundation/include/Poco/Version.h
+++ b/Foundation/include/Poco/Version.h
@@ -34,7 +34,7 @@
 //      Ax are alpha releases
 //      Bx are beta releases
 //
-#define POCO_VERSION 0x01050400
+#define POCO_VERSION 0x010600D1
 
 
 #endif // Foundation_Version_INCLUDED
diff --git a/VERSION b/VERSION
index 94fe62c27..dc5854daf 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.4
+1.6.0d1
diff --git a/libversion b/libversion
index a45fd52cc..64bb6b746 100644
--- a/libversion
+++ b/libversion
@@ -1 +1 @@
-24
+30