-% wget http://www.nncpgo.org/download/nncp-3.0.tar.xz
-% wget http://www.nncpgo.org/download/nncp-3.0.tar.xz.sig
-% gpg --verify nncp-3.0.tar.xz.sig nncp-3.0.tar.xz
-% tar xf nncp-3.0.tar.xz
-% PATH=/usr/lib/go-1.6/bin:$PATH make -C nncp-3.0 all
-# make -C nncp-3.0 install PREFIX=/usr
+% wget http://www.nncpgo.org/download/nncp-3.1.tar.xz
+% wget http://www.nncpgo.org/download/nncp-3.1.tar.xz.sig
+% gpg --verify nncp-3.1.tar.xz.sig nncp-3.1.tar.xz
+% tar xf nncp-3.1.tar.xz
+% PATH=/usr/lib/go-1.6/bin:$PATH make -C nncp-3.1 all
+# make -C nncp-3.1 install PREFIX=/usr