diff --git a/CHANGELOG b/CHANGELOG
index f6571d6..04b11f9 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,11 @@
+--------------------------------------------------------------------------------
+LuaSec 0.5.1
+------------
+- Check if SSLv3 protocol is available.
+- Fix push_asn1_string().
+- Update samples to use 'sslv23' and 'tlsv1_2'.
+- Update MACOSX_VERSION to 10.11 on Makefile.
+
 --------------------------------------------------------------------------------
 LuaSec 0.5
 ------------
diff --git a/INSTALL b/INSTALL
index f5181b1..44a0c5e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,9 +1,9 @@
-LuaSec 0.5
+LuaSec 0.5.1
 ------------
 
 * OpenSSL options:
 
-    By default, LuaSec 0.5 includes options for OpenSSL 1.0.1e.
+    By default, LuaSec 0.5.1 includes options for OpenSSL 1.0.1e.
 
     If you need to generate the options for a different version of OpenSSL:
 
diff --git a/LICENSE b/LICENSE
index 2f164d9..db3b4e5 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,5 +1,5 @@
-LuaSec 0.5 license
-Copyright (C) 2006-2013 Bruno Silvestre, UFG
+LuaSec 0.5.1 license
+Copyright (C) 2006-2015 Bruno Silvestre, UFG
 
 Permission is hereby granted, free  of charge, to any person obtaining
 a  copy  of this  software  and  associated  documentation files  (the
diff --git a/README.md b/README.md
index 919825a..009b91a 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,10 @@
+LuaSec 0.5.1
+============
+- Check if SSLv3 protocol is available.
+- Fix push_asn1_string().
+- Update samples to use 'sslv23' and 'tlsv1_2'.
+- Update MACOSX_VERSION to 10.11 on Makefile.
+
 LuaSec 0.5
 ==========
 
diff --git a/src/config.h b/src/config.h
index 43fe5e2..7ad2f46 100644
--- a/src/config.h
+++ b/src/config.h
@@ -1,6 +1,6 @@
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
- * Copyright (C) 2006-2014 Bruno Silvestre
+ * LuaSec 0.5.1
+ * Copyright (C) 2006-2015 Bruno Silvestre
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/context.c b/src/context.c
index 4cb1efb..abddfc0 100644
--- a/src/context.c
+++ b/src/context.c
@@ -1,9 +1,9 @@
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
+ * LuaSec 0.5.1
  *
- * Copyright (C) 2014 Kim Alvefur, Paul Aurich, Tobias Markmann, 
- *                    Matthew Wild.
- * Copyright (C) 2006-2014 Bruno Silvestre.
+ * Copyright (C) 2014-2015 Kim Alvefur, Paul Aurich, Tobias Markmann, 
+ *                         Matthew Wild.
+ * Copyright (C) 2006-2015 Bruno Silvestre.
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/context.h b/src/context.h
index 293f615..4bfa9a5 100644
--- a/src/context.h
+++ b/src/context.h
@@ -2,8 +2,8 @@
 #define LSEC_CONTEXT_H
 
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
- * Copyright (C) 2006-2014 Bruno Silvestre
+ * LuaSec 0.5.1
+ * Copyright (C) 2006-2015 Bruno Silvestre
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/ec.h b/src/ec.h
index 921359e..2a8b931 100644
--- a/src/ec.h
+++ b/src/ec.h
@@ -1,6 +1,6 @@
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
- * Copyright (C) 2006-2014 Bruno Silvestre
+ * LuaSec 0.5.1
+ * Copyright (C) 2006-2015 Bruno Silvestre
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/https.lua b/src/https.lua
index bdfc17d..5d08194 100644
--- a/src/https.lua
+++ b/src/https.lua
@@ -1,6 +1,6 @@
 ----------------------------------------------------------------------------
--- LuaSec 0.5
--- Copyright (C) 2009-2014 PUC-Rio
+-- LuaSec 0.5.1
+-- Copyright (C) 2009-2015 PUC-Rio
 --
 -- Author: Pablo Musa
 -- Author: Tomas Guisasola
@@ -22,8 +22,8 @@ local getmetatable = getmetatable
 
 module("ssl.https")
 
-_VERSION   = "0.5"
-_COPYRIGHT = "LuaSec 0.5 - Copyright (C) 2009-2014 PUC-Rio"
+_VERSION   = "0.5.1"
+_COPYRIGHT = "LuaSec 0.5.1 - Copyright (C) 2009-2015 PUC-Rio"
 
 -- Default settings
 PORT = 443
diff --git a/src/options.h b/src/options.h
index 57fb934..85eabd2 100644
--- a/src/options.h
+++ b/src/options.h
@@ -2,8 +2,8 @@
 #define LSEC_OPTIONS_H
 
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
- * Copyright (C) 2006-2014 Bruno Silvestre
+ * LuaSec 0.5.1
+ * Copyright (C) 2006-2015 Bruno Silvestre
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/options.lua b/src/options.lua
index 26c49c4..b799c14 100644
--- a/src/options.lua
+++ b/src/options.lua
@@ -21,8 +21,8 @@ local function generate(options, version)
 #define LSEC_OPTIONS_H
 
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
- * Copyright (C) 2006-2014 Bruno Silvestre
+ * LuaSec 0.5.1
+ * Copyright (C) 2006-2015 Bruno Silvestre
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/ssl.c b/src/ssl.c
index 2fa6ede..7b4dc37 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -1,8 +1,8 @@
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
+ * LuaSec 0.5.1
  *
- * Copyright (C) 2014 Kim Alvefur, Paul Aurich, Tobias Markmann, 
- *                    Matthew Wild.
+ * Copyright (C) 2014-2015 Kim Alvefur, Paul Aurich, Tobias Markmann, 
+ *                         Matthew Wild.
  * Copyright (C) 2006-2014 Bruno Silvestre.
  *
  *--------------------------------------------------------------------------*/
@@ -655,7 +655,7 @@ static int meth_info(lua_State *L)
 
 static int meth_copyright(lua_State *L)
 {
-  lua_pushstring(L, "LuaSec 0.5 - Copyright (C) 2006-2011 Bruno Silvestre"
+  lua_pushstring(L, "LuaSec 0.5.1 - Copyright (C) 2006-2015 Bruno Silvestre"
 #if defined(WITH_LUASOCKET)
                     "\nLuaSocket 3.0-RC1 - Copyright (C) 2004-2013 Diego Nehab"
 #endif
diff --git a/src/ssl.h b/src/ssl.h
index b357196..5ce2c59 100644
--- a/src/ssl.h
+++ b/src/ssl.h
@@ -2,8 +2,8 @@
 #define LSEC_SSL_H
 
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
- * Copyright (C) 2006-2014 Bruno Silvestre
+ * LuaSec 0.5.1
+ * Copyright (C) 2006-2015 Bruno Silvestre
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/ssl.lua b/src/ssl.lua
index 64f805b..1a6a00d 100644
--- a/src/ssl.lua
+++ b/src/ssl.lua
@@ -1,6 +1,6 @@
 ------------------------------------------------------------------------------
--- LuaSec 0.5
--- Copyright (C) 2006-2014 Bruno Silvestre
+-- LuaSec 0.5.1
+-- Copyright (C) 2006-2015 Bruno Silvestre
 --
 ------------------------------------------------------------------------------
 
@@ -10,7 +10,7 @@ local x509    = require("ssl.x509")
 
 module("ssl", package.seeall)
 
-_VERSION   = "0.5.PR"
+_VERSION   = "0.5.1"
 _COPYRIGHT = core.copyright()
 
 -- Export
diff --git a/src/x509.c b/src/x509.c
index 12c9c2e..e56f920 100644
--- a/src/x509.c
+++ b/src/x509.c
@@ -1,8 +1,8 @@
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
+ * LuaSec 0.5.1
  *
- * Copyright (C) 2014 Kim Alvefur, Paul Aurich, Tobias Markmann
- *                    Matthew Wild, Bruno Silvestre.
+ * Copyright (C) 2014-2015 Kim Alvefur, Paul Aurich, Tobias Markmann
+ *                         Matthew Wild, Bruno Silvestre.
  *
  *--------------------------------------------------------------------------*/
 
diff --git a/src/x509.h b/src/x509.h
index 2b32cdd..b09b3b1 100644
--- a/src/x509.h
+++ b/src/x509.h
@@ -1,8 +1,8 @@
 /*--------------------------------------------------------------------------
- * LuaSec 0.5
+ * LuaSec 0.5.1
  *
- * Copyright (C) 2014 Kim Alvefur, Paul Aurich, Tobias Markmann
- *                    Matthew Wild, Bruno Silvestre.
+ * Copyright (C) 2014-2015 Kim Alvefur, Paul Aurich, Tobias Markmann
+ *                         Matthew Wild, Bruno Silvestre.
  *
  *--------------------------------------------------------------------------*/