diff --git a/doc/Changelog.html b/doc/Changelog.html
index 4ff29693..04032bea 100644
--- a/doc/Changelog.html
+++ b/doc/Changelog.html
@@ -82,6 +82,7 @@
 <h1 id="lamexp-v4.xx-history"><span class="header-section-number">1</span> LameXP v4.xx History</h1>
 <h2 id="lamexp-v4.12-xxxx-xx-xx" class="unnumbered">LameXP v4.12 [xxxx-xx-xx]</h2>
 <ul>
+<li>Upgraded build environment to Microsoft Visual Studio 2013 with Update-5<br /></li>
 <li>Updated Qt runtime libraries to v4.8.7 Final (2015-05-25), compiled with MSVC 12.0<br /></li>
 <li>Added Hungarian translation, contributed by Zityi's Translator Team <script type="text/javascript">
 <!--
diff --git a/doc/Changelog.md b/doc/Changelog.md
index d825c41d..62dec345 100644
--- a/doc/Changelog.md
+++ b/doc/Changelog.md
@@ -4,6 +4,7 @@
 
 ## LameXP v4.12 [xxxx-xx-xx] ## {-}
 
+* Upgraded build environment to Microsoft Visual Studio 2013 with Update-5
 * Updated Qt runtime libraries to v4.8.7 Final (2015-05-25), compiled with MSVC 12.0
 * Added Hungarian translation, contributed by Zityi's Translator Team <zityisoft@gmail.com>
 * Added optional support for the *libfdk-aac* encoder, using the [fdkaac](https://github.com/nu774/fdkaac) front-end by nu774
diff --git a/src/Config.h b/src/Config.h
index 579db090..77d50108 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -34,8 +34,8 @@
 #define VER_LAMEXP_MINOR_HI					1
 #define VER_LAMEXP_MINOR_LO					2
 #define VER_LAMEXP_TYPE						Beta
-#define VER_LAMEXP_PATCH					1
-#define VER_LAMEXP_BUILD					1768
+#define VER_LAMEXP_PATCH					2
+#define VER_LAMEXP_BUILD					1770
 #define VER_LAMEXP_CONFG					1700
 
 ///////////////////////////////////////////////////////////////////////////////