diff --git a/.abf.yml b/.abf.yml
index a8e4e91..10d738c 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,2 +1,2 @@
 sources:
-  xz-5.0.4.tar.xz: 2b57b7825ec62dc4cb3540bd11390c183238688c
+  xz-5.1.3alpha.tar.xz: 52bbddfd0909590d7f47c7a7f82aa5fa5e6a2208
diff --git a/xz-5.1.3alpha-man-page-day.patch b/xz-5.1.3alpha-man-page-day.patch
new file mode 100644
index 0000000..0de469b
--- /dev/null
+++ b/xz-5.1.3alpha-man-page-day.patch
@@ -0,0 +1,64 @@
+--- xz-5.1.3alpha/src/xz/message.c.day	2013-10-26 12:27:12.000000000 +0200
++++ xz-5.1.3alpha/src/xz/message.c	2014-02-10 12:58:14.957708913 +0100
+@@ -1090,7 +1090,8 @@ message_help(bool long_help)
+ 
+ 	puts(_(
+ "  -z, --compress      force compression\n"
+-"  -d, --decompress    force decompression\n"
++"  -d, --decompress, --uncompress\n"
++"                      force decompression\n"
+ "  -t, --test          test compressed file integrity\n"
+ "  -l, --list          list information about .xz files"));
+ 
+@@ -1100,7 +1101,8 @@ message_help(bool long_help)
+ 	puts(_(
+ "  -k, --keep          keep (don't delete) input files\n"
+ "  -f, --force         force overwrite of output file and (de)compress links\n"
+-"  -c, --stdout        write to standard output and don't delete input files"));
++"  -c, --stdout, --to-stdout\n"
++"                      write to standard output and don't delete input files"));
+ 
+ 	if (long_help) {
+ 		puts(_(
+@@ -1150,7 +1152,7 @@ message_help(bool long_help)
+ 		puts(_( // xgettext:no-c-format
+ "      --memlimit-compress=LIMIT\n"
+ "      --memlimit-decompress=LIMIT\n"
+-"  -M, --memlimit=LIMIT\n"
++"  -M, --memlimit=LIMIT, (old alias --memory=LIMIT)\n"
+ "                      set memory usage limit for compression, decompression,\n"
+ "                      or both; LIMIT is in bytes, % of RAM, or 0 for defaults"));
+ 
+--- xz-5.1.3alpha/src/xz/xz.1.day	2013-10-26 12:27:12.000000000 +0200
++++ xz-5.1.3alpha/src/xz/xz.1	2014-02-10 12:58:14.957708913 +0100
+@@ -972,7 +972,7 @@ See
+ for possible ways to specify the
+ .IR limit .
+ .TP
+-\fB\-M\fR \fIlimit\fR, \fB\-\-memlimit=\fIlimit\fR, \fB\-\-memory=\fIlimit
++\fB\-M\fR \fIlimit\fR, \fB\-\-memlimit=\fIlimit\fR, (old alias \fB\-\-memory=\fIlimit\fR)
+ This is equivalent to specifying \fB\-\-memlimit\-compress=\fIlimit
+ \fB\-\-memlimit\-decompress=\fIlimit\fR.
+ .TP
+--- xz-5.1.3alpha/src/xzdec/xzdec.c.day	2014-02-10 12:58:14.957708913 +0100
++++ xz-5.1.3alpha/src/xzdec/xzdec.c	2014-02-10 13:02:37.107709989 +0100
+@@ -65,12 +65,16 @@ help(void)
+ "Decompress files in the ." TOOL_FORMAT " format to standard output.\n"
+ "\n"
+ "  -d, --decompress   (ignored, only decompression is supported)\n"
+-"  -k, --keep         (ignored, files are never deleted)\n"
+-"  -c, --stdout       (ignored, output is always written to standard output)\n"
+ "  -q, --quiet        specify *twice* to suppress errors\n"
+-"  -Q, --no-warn      (ignored, the exit status 2 is never used)\n"
+ "  -h, --help         display this help and exit\n"
+ "  -V, --version      display the version number and exit\n"
++"  -c, --stdout, --to-stdout\n"
++"                     ignored, data are always written to standard output\n"
++"  -d, --decompress, --uncompress\n"
++"                     ignored, only decompression is supported\n"
++"  -k, --keep         ignored, we never create/remove any files\n"
++"  -Q, --no-warn      ignored, we never use exit status 2\n"
++
+ "\n"
+ "With no FILE, or when FILE is -, read standard input.\n"
+ "\n"
diff --git a/xz-5.0.0-text-tune.patch b/xz-5.1.3alpha-text-tune.patch
similarity index 50%
rename from xz-5.0.0-text-tune.patch
rename to xz-5.1.3alpha-text-tune.patch
index 23b48f9..a861326 100644
--- a/xz-5.0.0-text-tune.patch
+++ b/xz-5.1.3alpha-text-tune.patch
@@ -1,5 +1,5 @@
---- xz-5.0.0/src/liblzma/api/lzma/container.h.text~	2010-10-23 16:47:33.000000000 +0200
-+++ xz-5.0.0/src/liblzma/api/lzma/container.h	2010-12-14 23:57:08.628431579 +0100
+--- xz-5.1.3alpha/src/liblzma/api/lzma/container.h.text~	2014-02-10 20:53:46.000000000 +0100
++++ xz-5.1.3alpha/src/liblzma/api/lzma/container.h	2014-02-11 11:58:23.406404399 +0100
 @@ -43,7 +43,7 @@
  /*
   * Preset flags
@@ -9,7 +9,7 @@
   */
  
  /**
-@@ -59,6 +59,13 @@
+@@ -59,6 +59,12 @@
   */
  #define LZMA_PRESET_EXTREME       (UINT32_C(1) << 31)
  
@@ -19,12 +19,11 @@
 + * TODO
 + */
 +#define LZMA_PRESET_TEXT          (UINT32_C(1) << 18)
-+
  
+ #ifdef LZMA_UNSTABLE /* Unstable API that may change. Use only for testing. */
  /**
-  * \brief       Calculate approximate memory usage of easy encoder
---- xz-5.0.0/src/liblzma/lzma/lzma_encoder_presets.c.text~	2010-10-23 16:47:33.000000000 +0200
-+++ xz-5.0.0/src/liblzma/lzma/lzma_encoder_presets.c	2010-12-15 01:01:27.610442970 +0100
+--- xz-5.1.3alpha/src/liblzma/lzma/lzma_encoder_presets.c.text~	2014-02-10 20:53:46.000000000 +0100
++++ xz-5.1.3alpha/src/liblzma/lzma/lzma_encoder_presets.c	2014-02-11 11:58:23.406404399 +0100
 @@ -18,7 +18,7 @@ lzma_lzma_preset(lzma_options_lzma *opti
  {
  	const uint32_t level = preset & LZMA_PRESET_LEVEL_MASK;
@@ -34,7 +33,7 @@
  
  	if (level > 9 || (flags & ~supported_flags))
  		return true;
-@@ -57,5 +57,18 @@ lzma_lzma_preset(lzma_options_lzma *opti
+@@ -59,5 +59,18 @@ lzma_lzma_preset(lzma_options_lzma *opti
  		}
  	}
  
@@ -53,17 +52,17 @@
 +
  	return false;
  }
---- xz-5.0.0/src/xz/args.c.text~	2010-10-23 16:47:33.000000000 +0200
-+++ xz-5.0.0/src/xz/args.c	2010-12-14 23:57:08.639432696 +0100
-@@ -76,6 +76,7 @@ parse_real(args_info *args, int argc, ch
- 		OPT_NO_ADJUST,
+--- xz-5.1.3alpha/src/xz/args.c.text~	2014-02-10 20:53:46.000000000 +0100
++++ xz-5.1.3alpha/src/xz/args.c	2014-02-11 12:12:51.916381380 +0100
+@@ -141,6 +141,7 @@ parse_real(args_info *args, int argc, ch
  		OPT_INFO_MEMORY,
  		OPT_ROBOT,
+ 		OPT_FLUSH_TIMEOUT,
 +		OPT_TEXT,
  	};
  
  	static const char short_opts[]
-@@ -113,6 +114,8 @@ parse_real(args_info *args, int argc, ch
+@@ -182,6 +183,8 @@ parse_real(args_info *args, int argc, ch
  		{ "extreme",      no_argument,       NULL,  'e' },
  		{ "fast",         no_argument,       NULL,  '0' },
  		{ "best",         no_argument,       NULL,  '9' },
@@ -72,8 +71,8 @@
  
  		// Filters
  		{ "lzma1",        optional_argument, NULL,  OPT_LZMA1 },
-@@ -401,6 +404,10 @@ parse_real(args_info *args, int argc, ch
- 			opt_auto_adjust = false;
+@@ -490,6 +493,10 @@ parse_real(args_info *args, int argc, ch
+ 					optarg, 0, UINT64_MAX);
  			break;
  
 +		case OPT_TEXT:
@@ -83,46 +82,36 @@
  		default:
  			message_try_help();
  			tuklib_exit(E_ERROR, E_ERROR, false);
---- xz-5.0.0/src/xz/coder.c.text~	2010-10-23 16:47:33.000000000 +0200
-+++ xz-5.0.0/src/xz/coder.c	2010-12-14 23:57:08.640432976 +0100
-@@ -47,6 +47,9 @@ static size_t preset_number = 6;
- /// compression ratio.
- static bool preset_extreme = false;
+--- xz-5.1.3alpha/src/xz/coder.c.text~	2014-02-10 20:53:46.000000000 +0100
++++ xz-5.1.3alpha/src/xz/coder.c	2014-02-11 11:58:23.406404399 +0100
+@@ -59,6 +59,8 @@ static lzma_mt mt_options = {
+ };
+ #endif
  
 +/// TODO: Description..
 +static bool preset_text = false;
-+
- /// Integrity check type
- static lzma_check check;
- 
-@@ -89,6 +92,14 @@ coder_set_extreme(void)
- 
  
  extern void
-+coder_set_text(void)
-+{
-+	preset_text = true;
-+	return;
-+}
+ coder_set_check(lzma_check new_check)
+@@ -101,6 +103,15 @@ coder_set_extreme(void)
+ 	forget_filter_chain();
+ 	return;
+ }
 +
 +
 +extern void
- coder_add_filter(lzma_vli id, void *options)
- {
- 	if (filters_count == LZMA_FILTERS_MAX)
-@@ -137,6 +148,9 @@ coder_set_compression_settings(void)
- 		if (preset_extreme)
- 			preset_number |= LZMA_PRESET_EXTREME;
++coder_set_text(void)
++{
++	preset_number |= LZMA_PRESET_TEXT;
++	forget_filter_chain();
++	return;
++}
  
-+		if (preset_text)
-+			preset_number |= LZMA_PRESET_TEXT;
-+
- 		if (lzma_lzma_preset(&opt_lzma, preset_number))
- 			message_bug();
  
---- xz-5.0.0/src/xz/coder.h.text~	2010-10-23 16:47:33.000000000 +0200
-+++ xz-5.0.0/src/xz/coder.h	2010-12-14 23:57:08.649682731 +0100
-@@ -51,6 +51,9 @@ extern void coder_set_preset(size_t new_
+ extern void
+--- xz-5.1.3alpha/src/xz/coder.h.text~	2014-02-10 20:53:46.000000000 +0100
++++ xz-5.1.3alpha/src/xz/coder.h	2014-02-11 11:58:23.406404399 +0100
+@@ -61,6 +61,9 @@ extern void coder_set_preset(uint32_t ne
  /// Enable extreme mode
  extern void coder_set_extreme(void);
  
@@ -132,3 +121,13 @@
  /// Add a filter to the custom filter chain
  extern void coder_add_filter(lzma_vli id, void *options);
  
+--- xz-5.1.3alpha/tests/test_compress.sh.text~	2014-02-11 13:03:45.431535071 +0100
++++ xz-5.1.3alpha/tests/test_compress.sh	2014-02-11 15:33:40.012017357 +0100
+@@ -103,6 +103,7 @@ do
+ 
+ 	# Don't test with empty arguments; it breaks some ancient
+ 	# proprietary /bin/sh versions due to $@ used in test_xz().
++	test_xz -0 --text
+ 	test_xz -1
+ 	test_xz -2
+ 	test_xz -3
diff --git a/xz.spec b/xz.spec
index 7bda365..34dadda 100644
--- a/xz.spec
+++ b/xz.spec
@@ -1,21 +1,24 @@
 %define major 5
 %define lname lzma
 %define libname %mklibname %{lname} %{major}
-%define devname %mklibname -d %{lname}
+%define devname %mklibname %{lname} -d
 
 %bcond_with uclibc
 %bcond_with dietlibc
 
+%define gitdate 20140129
+
 Summary:	XZ utils
 Name:		xz
-Version:	5.0.4
-Release:	3
+Version:	5.1.3
+Release:	0.alpha.3.%{gitdate}.2
 License:	Public Domain
 Group:		Archiving/Compression
 Url:		http://tukaani.org/xz/
-Source0:	http://tukaani.org/xz/%{name}-%{version}.tar.xz
+Source0:	http://tukaani.org/xz/%{name}-%{version}alpha.tar.xz
 Source1:	xzme
-Patch0:		xz-5.0.0-text-tune.patch
+Patch0:		xz-5.1.3alpha-text-tune.patch
+Patch1:		xz-5.1.3alpha-man-page-day.patch
 # needed by check suite
 BuildRequires:	diffutils
 %if %{with uclibc}
@@ -91,8 +94,9 @@ Devel libraries & headers for liblzma.
 #----------------------------------------------------------------------------
 
 %prep
-%setup -q
+%setup -qn %{name}-%{version}alpha
 %patch0 -p1 -b .text~
+%patch1 -p1 -b .day~
 
 %build
 export CONFIGURE_TOP=`pwd`