diff --git a/doc/Changelog.html b/doc/Changelog.html
index 93ddbe31..d0f0fa9a 100644
--- a/doc/Changelog.html
+++ b/doc/Changelog.html
@@ -18,7 +18,7 @@ Changes between v3.18 and v4.00:<br><ul>
 <li>Updated all command-line tools to support Unicode file names, mostly required custom patches
 <li>Updated LAME encoder to v3.99.0.11 (2011-02-11), compiled with ICL 11.1.065
 <li>Updated OggEnc v2.87 using libvorbis v1.3.2 (2010-11-06), compiled with ICL 11.1 and MSVC 9.0
-<li>Updated mpg123 decoder to v1.13.1 (2011-01-06), compiled with GCC 4.5.2
+<li>Updated mpg123 decoder to v1.13.2 (2011-02-19), compiled with GCC 4.5.2
 <li>Updated MediaInfo to v0.7.41 (2011-01-24), compiled with ICL 11.1.065
 <li>Updated SoX to v14.3.1 (2010-04-11), compiled with MSVC 9.0
 <li>Updated GnuPG to v1.4.11, compiled with GCC 4.5.2
diff --git a/res/tools/mpg123.exe b/res/tools/mpg123.exe
index 04f5b1e8..24821fab 100644
Binary files a/res/tools/mpg123.exe and b/res/tools/mpg123.exe differ
diff --git a/src/Config.h b/src/Config.h
index 164cae4c..37a1c907 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -25,8 +25,8 @@
 #define VER_LAMEXP_MAJOR				4
 #define VER_LAMEXP_MINOR_HI				0
 #define VER_LAMEXP_MINOR_LO				0
-#define VER_LAMEXP_BUILD				323
-#define VER_LAMEXP_SUFFIX				RC-3
+#define VER_LAMEXP_BUILD				324
+#define VER_LAMEXP_SUFFIX				RC-4
 
 /*
  * Tools versions
diff --git a/src/Thread_Initialization.cpp b/src/Thread_Initialization.cpp
index 5f080e4a..aeb2827a 100644
--- a/src/Thread_Initialization.cpp
+++ b/src/Thread_Initialization.cpp
@@ -58,7 +58,7 @@ g_lamexp_tools[] =
 	{"ec235c6404caa31e7975e9bbf9ba59599258ae1d", "mediainfo_i386.exe", 741},
 	{"72d7efdcafc2dee3b534f27ab6e01916d02ba470", "mediainfo_x64.exe", 741},
 	{"aa89763a5ba4d1a5986549b9ee53e005c51940c1", "mpcdec.exe", 435},
-	{"6b6913a54cac08b22d5b468aaed83550fc9ae5b4", "mpg123.exe", 1131},
+	{"38f81efca6c1eeab0b9dc39d06c2ac750267217f", "mpg123.exe", 1132},
 	{"8dd7138714c3bcb39f5a3213413addba13d06f1e", "oggdec.exe", UINT_MAX},
 	{"ecd15abe103184aca96e406f5f1c82c6fb2e665d", "oggenc2_i386.exe", 287},
 	{"ffe0fbd73352396dc3752ac9d484dbfc754a226d", "oggenc2_sse2.exe", 287},