diff --git a/community/gnuradio/PKGBUILD b/community/gnuradio/PKGBUILD
index a5a1bc249..aa0405c96 100644
--- a/community/gnuradio/PKGBUILD
+++ b/community/gnuradio/PKGBUILD
@@ -8,7 +8,7 @@
 pkgbase=gnuradio
 pkgname=(gnuradio gnuradio-companion)
 pkgver=3.7.13.4
-pkgrel=3
+pkgrel=4
 pkgdesc="General purpose DSP and SDR toolkit.  With drivers for usrp and fcd."
 arch=('x86_64')
 url="http://gnuradio.org"
@@ -99,6 +99,7 @@ package_gnuradio() {
   optdepends=('boost: gr_modtool'
               'swig: gr_modtool'
               'cmake: gr_modtool'
+              'python2-cheetah: gr_modtool'
               'pkgconfig: libuhd')
   cd "$srcdir"
   install -Dm644 21-fcd.rules "$pkgdir/usr/lib/udev/rules.d/21-fcd.rules"