diff --git a/gr-nacl.lwr b/gr-nacl.lwr
index 1ed53f2..a2062d0 100644
--- a/gr-nacl.lwr
+++ b/gr-nacl.lwr
@@ -17,7 +17,7 @@
 # Boston, MA 02110-1301, USA.
 #
 
-depends: gnuradio 
+depends: gnuradio libsodium
 category: common
 source: git://https://github.com/stwunsch/gr-nacl.git
 gitbranch: master
diff --git a/libsodium.lwr b/libsodium.lwr
new file mode 100644
index 0000000..e3bfcd9
--- /dev/null
+++ b/libsodium.lwr
@@ -0,0 +1,28 @@
+#
+# This file is part of PyBOMBS
+#
+# PyBOMBS is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# PyBOMBS is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with PyBOMBS; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+category: baseline
+depends: make git autoconf automake
+source: git://https://github.com/jedisct1/libsodium.git
+gitbranch: master
+inherit: autoconf
+configure {
+    autoreconf -i
+    ./configure --prefix=$prefix $config_opt
+    }