diff --git a/CHANGES b/CHANGES
index 8f22042..822e508 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,7 +4,7 @@
 * https://github.com/yaml/pyyaml/commits/
 * https://bitbucket.org/xi/pyyaml/commits/
 
-4.1 (2018-06-26)
+5.1 (2019-02-24)
 ----------------
 
 * https://github.com/yaml/pyyaml/pull/35  -- Some modernization of the test running
@@ -18,13 +18,24 @@
 * https://github.com/yaml/pyyaml/pull/62  -- Remove tox workaround for Travis CI
 * https://github.com/yaml/pyyaml/pull/63  -- Adding support to Unicode characters over codepoint 0xffff
 * https://github.com/yaml/pyyaml/pull/65  -- Support unicode literals over codepoint 0xffff
-* https://github.com/yaml/pyyaml/pull/74  -- Make pyyaml safe by default.
 * https://github.com/yaml/pyyaml/pull/75  -- add 3.12 changelog
 * https://github.com/yaml/pyyaml/pull/76  -- Fallback to Pure Python if Compilation fails
 * https://github.com/yaml/pyyaml/pull/84  -- Drop unsupported Python 3.3
+* https://github.com/yaml/pyyaml/pull/102 -- Include license file in the generated wheel package
+* https://github.com/yaml/pyyaml/pull/105 -- Removed Python 2.6 & 3.3 support
 * https://github.com/yaml/pyyaml/pull/111 -- Remove commented out Psyco code
+* https://github.com/yaml/pyyaml/pull/129 -- Remove call to `ord` in lib3 emitter code
+* https://github.com/yaml/pyyaml/pull/143 -- Allow to turn off sorting keys in Dumper
 * https://github.com/yaml/pyyaml/pull/149 -- Test on Python 3.7-dev
 * https://github.com/yaml/pyyaml/pull/158 -- Support escaped slash in double quotes "\/"
+* https://github.com/yaml/pyyaml/pull/181 -- Import Hashable from collections.abc
+* https://github.com/yaml/pyyaml/pull/256 -- Make default_flow_style=False
+* https://github.com/yaml/pyyaml/pull/257 -- Deprecate yaml.load and add FullLoader and UnsafeLoader classes
+
+3.13 (2018-07-05)
+-----------------
+
+* Resolved issues around PyYAML working in Python 3.7.
 
 3.12 (2016-08-28)
 -----------------
@@ -175,5 +186,5 @@
 
 * Initial release.  The version number reflects the codename
   of the project (PyYAML 3000) and differentiates it from
-  the abandoned PyYaml module. 
+  the abandoned PyYaml module.
 
diff --git a/LICENSE b/LICENSE
index 21cdd1d..e8f8805 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2017-2018 Ingy döt Net
+Copyright (c) 2017-2019 Ingy döt Net
 Copyright (c) 2006-2016 Kirill Simonov
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
diff --git a/announcement.msg b/announcement.msg
index fdf49ac..584990f 100644
--- a/announcement.msg
+++ b/announcement.msg
@@ -1,22 +1,23 @@
 From: Ingy döt Net <ingy@ingy.net>
 To: python-list@python.org, python-announce@python.org, yaml-core@lists.sourceforge.net
-Subject: [ANN] PyYAML-4.1: YAML parser and emitter for Python
+Subject: [ANN] PyYAML-5.1: YAML parser and emitter for Python
 
 =======================
- Announcing PyYAML-4.1
+ Announcing PyYAML-5.1
 =======================
 
 A new MAJOR RELEASE of PyYAML is now available:
 https://pypi.org/project/PyYAML/
 
-This is the first release of PyYAML under a new maintenance team. In August
-2016, maintenance of PyYAML and LibYAML was turned over from the original
-author, Kirill Simonov, to Ian Cordasco and Ingy döt Net.
+This is the first major release of PyYAML under the new maintenance team.
 
-The canonical source repo moved:
+Among the many changes listed below, this release specifically addresses the
+arbitrary code execution issue raised by:
 
-    from: https://bitbucket.org/xi/pyyaml/
-    to:   https://github.com/yaml/pyyaml
+    https://nvd.nist.gov/vuln/detail/CVE-2017-18342
+
+(See https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation
+for complete details).
 
 The PyYAML project is now maintained by the YAML and Python communities.
 Planning happens on the #yaml-dev, #pyyaml and #libyaml IRC channels on
@@ -37,13 +38,18 @@
 * https://github.com/yaml/pyyaml/pull/62  -- Remove tox workaround for Travis CI
 * https://github.com/yaml/pyyaml/pull/63  -- Adding support to Unicode characters over codepoint 0xffff
 * https://github.com/yaml/pyyaml/pull/65  -- Support unicode literals over codepoint 0xffff
-* https://github.com/yaml/pyyaml/pull/74  -- Make pyyaml safe by default.
 * https://github.com/yaml/pyyaml/pull/75  -- add 3.12 changelog
 * https://github.com/yaml/pyyaml/pull/76  -- Fallback to Pure Python if Compilation fails
 * https://github.com/yaml/pyyaml/pull/84  -- Drop unsupported Python 3.3
+* https://github.com/yaml/pyyaml/pull/102 -- Include license file in the generated wheel package
+* https://github.com/yaml/pyyaml/pull/105 -- Removed Python 2.6 & 3.3 support
 * https://github.com/yaml/pyyaml/pull/111 -- Remove commented out Psyco code
+* https://github.com/yaml/pyyaml/pull/129 -- Remove call to `ord` in lib3 emitter code
+* https://github.com/yaml/pyyaml/pull/143 -- Allow to turn off sorting keys in Dumper
 * https://github.com/yaml/pyyaml/pull/149 -- Test on Python 3.7-dev
 * https://github.com/yaml/pyyaml/pull/158 -- Support escaped slash in double quotes "\/"
+* https://github.com/yaml/pyyaml/pull/256 -- Make default_flow_style=False
+* https://github.com/yaml/pyyaml/pull/257 -- Deprecate yaml.load and add FullLoader and UnsafeLoader classes
 
 
 Resources
@@ -81,7 +87,7 @@
 
 >>> import yaml
 
->>> yaml.load("""
+>>> yaml.full_load("""
 ... name: PyYAML
 ... description: YAML parser and emitter for Python
 ... homepage: https://github.com/yaml/pyyaml
@@ -91,7 +97,7 @@
 'pickle'], 'homepage': 'https://github.com/yaml/pyyaml', 'description':
 'YAML parser and emitter for Python', 'name': 'PyYAML'}
 
->>> print yaml.dump(_)
+>>> print(yaml.dump(_))
 name: PyYAML
 homepage: https://github.com/yaml/pyyaml
 description: YAML parser and emitter for Python
@@ -101,13 +107,10 @@
 Maintainers
 ===========
 
-The following people are responsible for maintaining PyYAML:
+The following people are currently responsible for maintaining PyYAML:
 
 * Ingy döt Net
-* Ian Cordasco
 * Tina Mueller
-* Alex Gaynor
-* Donald Stufft
 * Matt Davis
 
 and many thanks to all who have contribributed!
@@ -117,7 +120,7 @@
 Copyright
 =========
 
-Copyright (c) 2017-2018 Ingy döt Net <ingy@ingy.net>
+Copyright (c) 2017-2019 Ingy döt Net <ingy@ingy.net>
 Copyright (c) 2006-2016 Kirill Simonov <xi@resolvent.net>
 
 The PyYAML module was written by Kirill Simonov <xi@resolvent.net>.
diff --git a/lib/yaml/__init__.py b/lib/yaml/__init__.py
index d4e94ca..e7a419d 100644
--- a/lib/yaml/__init__.py
+++ b/lib/yaml/__init__.py
@@ -8,7 +8,7 @@
 from loader import *
 from dumper import *
 
-__version__ = '3.13'
+__version__ = '5.1'
 
 try:
     from cyaml import *
diff --git a/lib3/yaml/__init__.py b/lib3/yaml/__init__.py
index 311a5a1..5df0bb5 100644
--- a/lib3/yaml/__init__.py
+++ b/lib3/yaml/__init__.py
@@ -8,7 +8,7 @@
 from .loader import *
 from .dumper import *
 
-__version__ = '3.13'
+__version__ = '5.1'
 try:
     from .cyaml import *
     __with_libyaml__ = True
diff --git a/setup.py b/setup.py
index 9217435..f40a5c4 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 
 NAME = 'PyYAML'
-VERSION = '3.13'
+VERSION = '5.1'
 DESCRIPTION = "YAML parser and emitter for Python"
 LONG_DESCRIPTION = """\
 YAML is a data serialization format designed for human readability