diff --git a/CHANGES.rst b/CHANGES.rst
index b2a83c7a7188acb79725e6ba6cd04e78beb396b9..2b8a1be672251994da19e886277cabf8240d47d5 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,13 @@
 Changes
 =======
 
+1.0.50 (2017-04-18)
+-------------------
+
+  * pbs: Do not parallelize calculus when the heaviest task is IO
+  * re6st-registry: Refactor integration with re6st registry
+  * erp5testnode: make shellinabox reusing password file of pwgen
+
 1.0.48 (2017-01-31)
 -------------------
 
diff --git a/setup.py b/setup.py
index 49972e56224d1801bf99581b9783eb94b33e466c..b91fa209782e0eafbe54a7a99cb26e98e45255a5 100755
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ from setuptools import setup, find_packages
 import glob
 import os
 
-version = '1.0.49.dev0'
+version = '1.0.50'
 name = 'slapos.cookbook'
 long_description = open("README.rst").read() + "\n" + \
     open("CHANGES.rst").read() + "\n"
diff --git a/stack/slapos.cfg b/stack/slapos.cfg
index 0744ce22188ef28982c4117890abbbc6a78329d2..3397c7e4cfdef4d216fb11dca6a2d8e27df25d1a 100644
--- a/stack/slapos.cfg
+++ b/stack/slapos.cfg
@@ -135,7 +135,7 @@ pytz = 2016.10
 requests = 2.13.0
 setuptools = 33.1.1
 six = 1.10.0
-slapos.cookbook = 1.0.48
+slapos.cookbook = 1.0.50
 slapos.core = 1.3.18
 slapos.extension.strip = 0.2
 slapos.libnetworkcache = 0.14.5
@@ -163,7 +163,7 @@ functools32 = 3.2.3.post2
 ipaddress = 1.0.18
 
 # Required by:
-# slapos.cookbook==1.0.48
+# slapos.cookbook==1.0.50
 jsonschema = 2.6.0
 
 # Required by: