diff --git a/.gitignore b/.gitignore
index 15e8916..aaf2dbc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 nmap-5.21.tar.bz2
+/nmap-5.50.tar.bz2
diff --git a/nmap.spec b/nmap.spec
index 2c84c44..0d38de8 100644
--- a/nmap.spec
+++ b/nmap.spec
@@ -1,8 +1,8 @@
 #TODO: stop using local copy of libdnet, once system distributed version supports sctp (grep sctp /usr/include/dnet.h)
 Summary: Network exploration tool and security scanner
 Name: nmap
-Version: 5.21
-Release: 10%{?dist}
+Version: 5.50
+Release: 1%{?dist}
 # nmap is GPLv2
 # zenmap is GPLv2 and LGPLv2+ (zenmap/higwidgets) and GPLv2+ (zenmap/radialnet)
 # libdnet-stripped is BSD (advertising clause rescinded by the Univ. of California in 1999) with some parts as Public Domain (crc32)
@@ -169,6 +169,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_mandir}/man1/xnmap.1.gz
 
 %changelog
+* Mon Feb 07 2011 Michal Hlavinka <mhlavink@redhat.com> - 2:5.50-1
+- updated to 5.50
+
 * Tue Oct 05 2010 Michal Hlavinka <mhlavink@redhat.com> - 2:5.21-10
 - add workaround for zenmap crash (#637403)
 
diff --git a/sources b/sources
index b7660b6..d665edf 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-f77fa51d89ab27d35e5cd87bb086b858  nmap-5.21.tar.bz2
+a4df96e52cb52a1bbe76caace5f21388  nmap-5.50.tar.bz2
diff --git a/zenmap-621887-workaround.patch b/zenmap-621887-workaround.patch
index aba22b7..74a9578 100644
--- a/zenmap-621887-workaround.patch
+++ b/zenmap-621887-workaround.patch
@@ -1,16 +1,7 @@
-diff -uNrp nmap-5.21.orig/zenmap/zenmapGUI/App.py nmap-5.21.new/zenmap/zenmapGUI/App.py
---- nmap-5.21.orig/zenmap/zenmapGUI/App.py	2009-11-04 04:36:50.000000000 +0100
-+++ nmap-5.21.new/zenmap/zenmapGUI/App.py	2010-09-25 15:45:20.000000000 +0200
-@@ -96,7 +96,7 @@ import ConfigParser
- # produces a warning, but the lack of a display eventually causes a
- # segmentation fault. See http://live.gnome.org/PyGTK/WhatsNew210.
- import warnings
--warnings.filterwarnings("error", module = "gtk")
-+warnings.filterwarnings("error", module = "gtk", append=True)
- try:
-     import gtk
- except Exception:
-@@ -176,7 +176,7 @@ def install_excepthook():
+diff -up nmap-5.50/zenmap/zenmapGUI/App.py.bz637403 nmap-5.50/zenmap/zenmapGUI/App.py
+--- nmap-5.50/zenmap/zenmapGUI/App.py.bz637403	2011-01-21 01:04:51.000000000 +0100
++++ nmap-5.50/zenmap/zenmapGUI/App.py	2011-02-07 13:01:36.275314680 +0100
+@@ -179,7 +179,7 @@ def install_excepthook():
          # produces a warning, but the lack of a display eventually causes a
          # segmentation fault. See http://live.gnome.org/PyGTK/WhatsNew210.
          import warnings