diff --git a/srcpkgs/libarchive/patches/xz_filter_mt.patch b/srcpkgs/libarchive/patches/xz_filter_mt.patch
new file mode 100644
index 00000000000..3ea40534e73
--- /dev/null
+++ b/srcpkgs/libarchive/patches/xz_filter_mt.patch
@@ -0,0 +1,39 @@
+Use lzma_stream_encoder_mt() to enable xz parallel compression in the
+xz write filter.
+
+	--xtraeme
+
+--- libarchive/archive_write_add_filter_xz.c.orig	2015-01-07 13:19:20.106417631 +0100
++++ libarchive/archive_write_add_filter_xz.c	2015-01-07 13:24:20.097461789 +0100
+@@ -103,6 +103,7 @@ struct private_data {
+ 	lzma_stream	 stream;
+ 	lzma_filter	 lzmafilters[2];
+ 	lzma_options_lzma lzma_opt;
++	lzma_mt		 lzma_mt;
+ 	int64_t		 total_in;
+ 	unsigned char	*compressed;
+ 	size_t		 compressed_buffer_size;
+@@ -151,6 +152,13 @@ common_setup(struct archive_write_filter
+ 	}
+ 	f->data = data;
+ 	data->compression_level = LZMA_PRESET_DEFAULT;
++	data->lzma_mt.check = LZMA_CHECK_CRC64;
++	data->lzma_mt.filters = data->lzmafilters;
++	data->lzma_mt.preset = data->compression_level;
++	data->lzma_mt.threads = lzma_cputhreads();
++	if (data->lzma_mt.threads == 0)
++		data->lzma_mt.threads = 1;
++
+ 	f->open = &archive_compressor_xz_open;
+ 	f->close = archive_compressor_xz_close;
+ 	f->free = archive_compressor_xz_free;
+@@ -226,8 +234,7 @@ archive_compressor_xz_init_stream(struct
+ 	data->stream.next_out = data->compressed;
+ 	data->stream.avail_out = data->compressed_buffer_size;
+ 	if (f->code == ARCHIVE_FILTER_XZ)
+-		ret = lzma_stream_encoder(&(data->stream),
+-		    data->lzmafilters, LZMA_CHECK_CRC64);
++		ret = lzma_stream_encoder_mt(&(data->stream), &data->lzma_mt);
+ 	else if (f->code == ARCHIVE_FILTER_LZMA)
+ 		ret = lzma_alone_encoder(&(data->stream), &data->lzma_opt);
+ 	else {	/* ARCHIVE_FILTER_LZIP */
diff --git a/srcpkgs/libarchive/template b/srcpkgs/libarchive/template
index e33539c31c2..a9410000c0c 100644
--- a/srcpkgs/libarchive/template
+++ b/srcpkgs/libarchive/template
@@ -1,13 +1,13 @@
 # Template file for 'libarchive'
 pkgname=libarchive
 version=3.1.2
-revision=13
+revision=14
 bootstrap=yes
 build_style=gnu-configure
 configure_args="$(vopt_enable acl) $(vopt_enable acl xattr)
  $(vopt_with expat) $(vopt_with lzo lzo2) $(vopt_with ssl openssl)
  --without-xml2 --without-nettle --disable-rpath ac_cv_func_lchmod=no"
-makedepends="zlib-devel bzip2-devel liblzma-devel
+makedepends="zlib-devel bzip2-devel liblzma-devel>=5.2
  $(vopt_if acl acl-devel) $(vopt_if expat expat-devel)
  $(vopt_if lzo lzo-devel) $(vopt_if ssl 'libressl-devel>=2.1.2')"
 short_desc="Library to read/write several different streaming archive formats"