diff --git a/pkgs/tools/security/nmap-unfree/default.nix b/pkgs/tools/security/nmap-unfree/default.nix
deleted file mode 100644
index 1e6ed42bae45..000000000000
--- a/pkgs/tools/security/nmap-unfree/default.nix
+++ /dev/null
@@ -1,65 +0,0 @@
-{ lib
-, stdenv
-, fetchurl
-, libpcap
-, pkg-config
-, openssl
-, lua5_3
-, pcre
-, liblinear
-, libssh2
-, zlib
-, withLua ? true
-}:
-
-stdenv.mkDerivation rec {
-  pname = "nmap-unfree";
-  version = "7.91";
-
-  src = fetchurl {
-    url = "https://nmap.org/dist/nmap-${version}.tar.bz2";
-    sha256 = "001kb5xadqswyw966k2lqi6jr6zz605jpp9w4kmm272if184pk0q";
-  };
-
-  prePatch = lib.optionalString stdenv.isDarwin ''
-    substituteInPlace libz/configure \
-        --replace /usr/bin/libtool ar \
-        --replace 'AR="libtool"' 'AR="ar"' \
-        --replace 'ARFLAGS="-o"' 'ARFLAGS="-r"'
-  '';
-
-  configureFlags = [
-    (if withLua then "--with-liblua=${lua5_3}" else "--without-liblua")
-  ];
-
-  makeFlags = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
-    "AR=${stdenv.cc.bintools.targetPrefix}ar"
-    "RANLIB=${stdenv.cc.bintools.targetPrefix}ranlib"
-    "CC=${stdenv.cc.targetPrefix}gcc"
-  ];
-
-  nativeBuildInputs = [ pkg-config ];
-
-  buildInputs = [
-    pcre
-    liblinear
-    libssh2
-    libpcap
-    openssl
-    zlib
-  ];
-
-  enableParallelBuilding = true;
-
-  # Tests require network access
-  doCheck = false;
-
-  meta = with lib; {
-    description = "Open source utility for network discovery and security auditing";
-    homepage = "http://www.nmap.org";
-    # Nmap Public Source License Version 0.93
-    # https://github.com/nmap/nmap/blob/master/LICENSE
-    license = licenses.unfree;
-    maintainers = with maintainers; [ fab SuperSandro2000 ];
-  };
-}
diff --git a/pkgs/tools/security/nmap/default.nix b/pkgs/tools/security/nmap/default.nix
index 531eb6eae4a5..a6d2ab143621 100644
--- a/pkgs/tools/security/nmap/default.nix
+++ b/pkgs/tools/security/nmap/default.nix
@@ -12,11 +12,11 @@ with lib;
 
 stdenv.mkDerivation rec {
   name = "nmap${optionalString graphicalSupport "-graphical"}-${version}";
-  version = "7.80";
+  version = "7.91";
 
   src = fetchurl {
     url = "https://nmap.org/dist/nmap-${version}.tar.bz2";
-    sha256 = "1aizfys6l9f9grm82bk878w56mg0zpkfns3spzj157h98875mypw";
+    sha256 = "001kb5xadqswyw966k2lqi6jr6zz605jpp9w4kmm272if184pk0q";
   };
 
   patches = [ ./zenmap.patch ]
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index a148788c35b5..88d289a8379e 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -526,6 +526,7 @@ mapAliases ({
   nix-review = nixpkgs-review; # added 2019-12-22
   nixFlakes = nixUnstable; # added 2021-05-21
   nmap_graphical = nmap-graphical;  # added 2017-01-19
+  nmap-unfree = nmap; # added 2021-04-06
   nologin = shadow; # added 2018-04-25
   nordic-polar = throw "nordic-polar was removed on 2021-05-27, now integrated in nordic"; # added 2021-05-27
   nxproxy = nx-libs; # added 2019-02-15
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e78e27a41eb4..a4b8dbf0af09 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7495,8 +7495,6 @@ in
     graphicalSupport = true;
   };
 
-  nmap-unfree = callPackage ../tools/security/nmap-unfree { };
-
   nmapsi4 = libsForQt514.callPackage ../tools/security/nmap/qt.nix { };
 
   nnn = callPackage ../applications/misc/nnn { };