diff --git a/build.py b/build.py
index 83d48021..b00e70d1 100755
--- a/build.py
+++ b/build.py
@@ -53,11 +53,11 @@ isDarwin = sys.platform == "darwin"
 
 # Some tools will be downloaded for the builds. These are the versions and
 # MD5s of the tool binaries currently in use.
-sipCurrentVersion = '4.13.3-snapshot-377e9e4763f5'
+sipCurrentVersion = '4.13.4-snapshot-9b330b545c65'
 sipMD5 = {
-    'darwin' : '23e22703cacf9110730c539d348e6e46',
-    'win32'  : '801c477ebe9e02e314e7e153e6ea7356', 
-    'linux2' : '07a1676641918106132bb64aa6517734', 
+    'darwin' : 'b76995b8a3c5b6f57f2b9d5a2c9f44cd',
+    'win32'  : '15d8a08cb6f26e38974ed37f1c671491', 
+    'linux2' : 'a7e72631a26024847f7c73dd74d5167f', 
 }
 
 wafCurrentVersion = '1.6.11'
diff --git a/sip/siplib/apiversions.c b/sip/siplib/apiversions.c
index 159d6f26..b7b193ef 100644
--- a/sip/siplib/apiversions.c
+++ b/sip/siplib/apiversions.c
@@ -1,7 +1,7 @@
 /*
  * The implementation of the supprt for setting API versions.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *
diff --git a/sip/siplib/bool.cpp b/sip/siplib/bool.cpp
index d2454a80..6dc8f88e 100644
--- a/sip/siplib/bool.cpp
+++ b/sip/siplib/bool.cpp
@@ -1,6 +1,6 @@
 // This contains all the C++ code that is needed by the sip module.
 //
-// Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+// Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
 //
 // This file is part of SIP.
 //
diff --git a/sip/siplib/descriptors.c b/sip/siplib/descriptors.c
index 16a05b81..41365b46 100644
--- a/sip/siplib/descriptors.c
+++ b/sip/siplib/descriptors.c
@@ -1,7 +1,7 @@
 /*
  * The implementation of the different descriptors.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *
diff --git a/sip/siplib/objmap.c b/sip/siplib/objmap.c
index 13204bc1..100bd952 100644
--- a/sip/siplib/objmap.c
+++ b/sip/siplib/objmap.c
@@ -2,7 +2,7 @@
  * This module implements a hash table class for mapping C/C++ addresses to the
  * corresponding wrapped Python object.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *
diff --git a/sip/siplib/qtlib.c b/sip/siplib/qtlib.c
index 4259d731..1ffb6234 100644
--- a/sip/siplib/qtlib.c
+++ b/sip/siplib/qtlib.c
@@ -2,7 +2,7 @@
  * The SIP library code that implements the interface to the optional module
  * supplied Qt support.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *
diff --git a/sip/siplib/sip.h b/sip/siplib/sip.h
index fadc0478..a1ab527f 100644
--- a/sip/siplib/sip.h
+++ b/sip/siplib/sip.h
@@ -54,8 +54,8 @@ extern "C" {
 /*
  * Define the SIP version number.
  */
-#define SIP_VERSION         0x040d03
-#define SIP_VERSION_STR     "4.13.3-snapshot-377e9e4763f5"
+#define SIP_VERSION         0x040d04
+#define SIP_VERSION_STR     "4.13.4-snapshot-9b330b545c65"
 
 
 /*
diff --git a/sip/siplib/sipint.h b/sip/siplib/sipint.h
index 990ba5eb..a97a44c1 100644
--- a/sip/siplib/sipint.h
+++ b/sip/siplib/sipint.h
@@ -1,7 +1,7 @@
 /*
  * This file defines the SIP library internal interfaces.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *
diff --git a/sip/siplib/threads.c b/sip/siplib/threads.c
index acd89328..3305f508 100644
--- a/sip/siplib/threads.c
+++ b/sip/siplib/threads.c
@@ -3,7 +3,7 @@
  * C++ classes that provide a thread interface to interact properly with the
  * Python threading infrastructure.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *
diff --git a/sip/siplib/voidptr.c b/sip/siplib/voidptr.c
index e0bf09d0..24140bab 100644
--- a/sip/siplib/voidptr.c
+++ b/sip/siplib/voidptr.c
@@ -1,7 +1,7 @@
 /*
  * SIP library code.
  *
- * Copyright (c) 2011 Riverbank Computing Limited <info@riverbankcomputing.com>
+ * Copyright (c) 2012 Riverbank Computing Limited <info@riverbankcomputing.com>
  *
  * This file is part of SIP.
  *