diff --git a/NEWS.md b/NEWS.md
index 3a8a06f3..e36db68d 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,26 @@
+Release 2.13-r850 (11 October 2018)
+-----------------------------------
+
+Changes to minimap2:
+
+ * Fixed wrongly formatted SAM when -L is in use (#231 and #233).
+
+ * Fixed an integer overflow in rare cases.
+
+ * Added --hard-mask-level to fine control split alignments (#244).
+
+ * Made --MD work with spliced alignment (#139).
+
+ * Replaced musl's getopt with ketopt for portability.
+
+ * Log peak memory usage on exit.
+
+This release should produce alignments identical to v2.12 and v2.11.
+
+(2.13: 11 October 2018, r850)
+
+
+
 Release 2.12-r827 (6 August 2018)
 ---------------------------------
 
diff --git a/README.md b/README.md
index b13136db..7ee09225 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ cd minimap2 && make
 # use presets (no test data)
 ./minimap2 -ax map-pb ref.fa pacbio.fq.gz > aln.sam       # PacBio genomic reads
 ./minimap2 -ax map-ont ref.fa ont.fq.gz > aln.sam         # Oxford Nanopore genomic reads
+./minimap2 -ax asm20 ref.fa pacbio-ccs.fq.gz > aln.sam    # PacBio CCS genomic reads
 ./minimap2 -ax sr ref.fa read1.fa read2.fa > aln.sam      # short genomic paired-end reads
 ./minimap2 -ax splice ref.fa rna-reads.fa > aln.sam       # spliced long reads (strand unknown)
 ./minimap2 -ax splice -uf -k14 ref.fa reads.fa > aln.sam  # noisy Nanopore Direct RNA-seq
@@ -70,8 +71,8 @@ Detailed evaluations are available from the [minimap2 paper][doi] or the
 Minimap2 is optimized for x86-64 CPUs. You can acquire precompiled binaries from
 the [release page][release] with:
 ```sh
-curl -L https://github.com/lh3/minimap2/releases/download/v2.12/minimap2-2.12_x64-linux.tar.bz2 | tar -jxvf -
-./minimap2-2.12_x64-linux/minimap2
+curl -L https://github.com/lh3/minimap2/releases/download/v2.13/minimap2-2.13_x64-linux.tar.bz2 | tar -jxvf -
+./minimap2-2.13_x64-linux/minimap2
 ```
 If you want to compile from the source, you need to have a C compiler, GNU make
 and zlib development files installed. Then type `make` in the source code
diff --git a/cookbook.md b/cookbook.md
index fa5f14e3..ea77817d 100644
--- a/cookbook.md
+++ b/cookbook.md
@@ -31,8 +31,8 @@ To acquire the data used in this cookbook and to install minimap2 and paftools,
 please follow the command lines below:
 ```sh
 # install minimap2 executables
-curl -L https://github.com/lh3/minimap2/releases/download/v2.12/minimap2-2.12_x64-linux.tar.bz2 | tar jxf -
-cp minimap2-2.12_x64-linux/{minimap2,k8,paftools.js} .  # copy executables
+curl -L https://github.com/lh3/minimap2/releases/download/v2.13/minimap2-2.13_x64-linux.tar.bz2 | tar jxf -
+cp minimap2-2.13_x64-linux/{minimap2,k8,paftools.js} .  # copy executables
 export PATH="$PATH:"`pwd`                               # put the current directory on PATH
 # download example datasets
 curl -L https://github.com/lh3/minimap2/releases/download/v2.10/cookbook-data.tgz | tar zxf -
diff --git a/main.c b/main.c
index ab7dc6a1..c4e7b0e9 100644
--- a/main.c
+++ b/main.c
@@ -6,7 +6,7 @@
 #include "mmpriv.h"
 #include "ketopt.h"
 
-#define MM_VERSION "2.12-r849-dirty"
+#define MM_VERSION "2.13-r850"
 
 #ifdef __linux__
 #include <sys/resource.h>
diff --git a/minimap2.1 b/minimap2.1
index 6f68ddc2..879ef441 100644
--- a/minimap2.1
+++ b/minimap2.1
@@ -1,4 +1,4 @@
-.TH minimap2 1 "6 August 2018" "minimap2-2.12 (r827)" "Bioinformatics tools"
+.TH minimap2 1 "11 October 2018" "minimap2-2.13 (r850)" "Bioinformatics tools"
 .SH NAME
 .PP
 minimap2 - mapping and alignment between collections of DNA sequences
diff --git a/misc/paftools.js b/misc/paftools.js
index 2fc29241..e489f37b 100755
--- a/misc/paftools.js
+++ b/misc/paftools.js
@@ -1,6 +1,6 @@
 #!/usr/bin/env k8
 
-var paftools_version = 'r767';
+var paftools_version = '2.13-r850';
 
 /*****************************
  ***** Library functions *****
diff --git a/python/mappy.pyx b/python/mappy.pyx
index 3516acbc..8083187e 100644
--- a/python/mappy.pyx
+++ b/python/mappy.pyx
@@ -3,7 +3,7 @@ from libc.stdlib cimport free
 cimport cmappy
 import sys
 
-__version__ = '2.11'
+__version__ = '2.13'
 
 cmappy.mm_reset_timer()
 
diff --git a/setup.py b/setup.py
index 4d8a90da..66145719 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@ def readme():
 
 setup(
 	name = 'mappy',
-	version = '2.12',
+	version = '2.13',
 	url = 'https://github.com/lh3/minimap2',
 	description = 'Minimap2 python binding',
 	long_description = readme(),