diff --git a/docs/nmap.1 b/docs/nmap.1
index bef94f7bf..fa7233820 100644
--- a/docs/nmap.1
+++ b/docs/nmap.1
@@ -1,13 +1,13 @@
 '\" t
 .\"     Title: nmap
 .\"    Author: [see the "Author" section]
-.\" Generator: DocBook XSL Stylesheets v1.74.3 <http://docbook.sf.net/>
-.\"      Date: 01/28/2011
+.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
+.\"      Date: 01/29/2011
 .\"    Manual: Nmap Reference Guide
 .\"    Source: Nmap
 .\"  Language: English
 .\"
-.TH "NMAP" "1" "01/28/2011" "Nmap" "Nmap Reference Guide"
+.TH "NMAP" "1" "01/29/2011" "Nmap" "Nmap Reference Guide"
 .\" -----------------------------------------------------------------
 .\" * set default formatting
 .\" -----------------------------------------------------------------
@@ -117,7 +117,7 @@ This options summary is printed when Nmap is run with no arguments, and the late
 .RS 4
 .\}
 .nf
-Nmap 5\&.36TEST4 ( http://nmap\&.org )
+Nmap 5\&.51SVN ( http://nmap\&.org )
 Usage: nmap [Scan Type(s)] [Options] {target specification}
 TARGET SPECIFICATION:
   Can pass hostnames, IP addresses, networks, etc\&.
@@ -1690,7 +1690,7 @@ Tells Nmap what interface to send and receive packets on\&. Nmap should be able
 .PP
 \fB\-\-source\-port \fR\fB\fIportnumber\fR\fR\fB;\fR \fB\-g \fR\fB\fIportnumber\fR\fR (Spoof source port number) .\" --source-port .\" -g .\" source port number
 .RS 4
-One surprisingly common misconfiguration is to trust traffic based only on the source port number\&. It is easy to understand how this comes about\&. An administrator will set up a shiny new firewall, only to be flooded with complains from ungrateful users whose applications stopped working\&. In particular, DNS may be broken because the UDP DNS replies from external servers can no longer enter the network\&. FTP is another common example\&. In active FTP transfers, the remote server tries to establish a connection back to the client to transfer the requested file\&.
+One surprisingly common misconfiguration is to trust traffic based only on the source port number\&. It is easy to understand how this comes about\&. An administrator will set up a shiny new firewall, only to be flooded with complaints from ungrateful users whose applications stopped working\&. In particular, DNS may be broken because the UDP DNS replies from external servers can no longer enter the network\&. FTP is another common example\&. In active FTP transfers, the remote server tries to establish a connection back to the client to transfer the requested file\&.
 .sp
 Secure solutions to these problems exist, often in the form of application\-level proxies or protocol\-parsing firewall modules\&. Unfortunately there are also easier, insecure solutions\&. Noting that DNS replies come from port 53 and active FTP from port 20, many administrators have fallen into the trap of simply allowing incoming traffic from those ports\&. They often assume that no attacker would notice and exploit such firewall holes\&. In other cases, administrators consider this a short\-term stop\-gap measure until they can implement a more secure solution\&. Then they forget the security upgrade\&.
 .sp
diff --git a/docs/nmap.usage.txt b/docs/nmap.usage.txt
index 80681f4ca..08927d14a 100644
--- a/docs/nmap.usage.txt
+++ b/docs/nmap.usage.txt
@@ -1,4 +1,4 @@
-Nmap 5.36TEST4 ( http://nmap.org )
+Nmap 5.51SVN ( http://nmap.org )
 Usage: nmap [Scan Type(s)] [Options] {target specification}
 TARGET SPECIFICATION:
   Can pass hostnames, IP addresses, networks, etc.
diff --git a/docs/zenmap.1 b/docs/zenmap.1
index 16116c9b0..93f2bc603 100644
--- a/docs/zenmap.1
+++ b/docs/zenmap.1
@@ -2,12 +2,12 @@
 .\"     Title: zenmap
 .\"    Author: [see the "Authors" section]
 .\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
-.\"      Date: 01/21/2011
+.\"      Date: 01/29/2011
 .\"    Manual: Zenmap Reference Guide
 .\"    Source: Zenmap
 .\"  Language: English
 .\"
-.TH "ZENMAP" "1" "01/21/2011" "Zenmap" "Zenmap Reference Guide"
+.TH "ZENMAP" "1" "01/29/2011" "Zenmap" "Zenmap Reference Guide"
 .\" -----------------------------------------------------------------
 .\" * set default formatting
 .\" -----------------------------------------------------------------
diff --git a/ndiff/docs/ndiff.1 b/ndiff/docs/ndiff.1
index 8e16d7f71..712f956d0 100644
--- a/ndiff/docs/ndiff.1
+++ b/ndiff/docs/ndiff.1
@@ -2,12 +2,12 @@
 .\"     Title: ndiff
 .\"    Author: [see the "Authors" section]
 .\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
-.\"      Date: 01/21/2011
+.\"      Date: 01/29/2011
 .\"    Manual: User Commands
 .\"    Source: Ndiff
 .\"  Language: English
 .\"
-.TH "NDIFF" "1" "01/21/2011" "Ndiff" "User Commands"
+.TH "NDIFF" "1" "01/29/2011" "Ndiff" "User Commands"
 .\" -----------------------------------------------------------------
 .\" * set default formatting
 .\" -----------------------------------------------------------------
diff --git a/nmap.h b/nmap.h
index 8e8c0bd0e..b834dad41 100644
--- a/nmap.h
+++ b/nmap.h
@@ -252,8 +252,8 @@ void *realloc();
 #ifndef NMAP_VERSION
 /* Edit this definition only within the quotes, because it is read from this
    file by the makefiles. */
-#define NMAP_VERSION "5.36TEST4"
-#define NMAP_NUM_VERSION "5.36.0.4"
+#define NMAP_VERSION "5.51SVN"
+#define NMAP_NUM_VERSION "5.51.0.0"
 #endif
 
 /* User configurable #defines: */