diff --git a/extra/giac/.SRCINFO b/extra/giac/.SRCINFO
index 535642585..1f8ff379a 100644
--- a/extra/giac/.SRCINFO
+++ b/extra/giac/.SRCINFO
@@ -1,13 +1,12 @@
 pkgbase = giac
 	pkgdesc = A free computer algebra system
 	pkgver = 1.9.0.995
-	pkgrel = 1
+	pkgrel = 2
 	url = http://www-fourier.ujf-grenoble.fr/~parisse/giac.html
 	arch = x86_64
 	license = GPL-3.0-only
 	makedepends = hevea
 	makedepends = libjpeg-turbo
-	makedepends = nauty
 	makedepends = python
 	makedepends = texlive-latexrecommended
 	makedepends = texlive-mathscience
@@ -29,6 +28,7 @@ pkgbase = giac
 	depends = libusb
 	depends = mpfi
 	depends = mpfr
+	depends = nauty
 	depends = ntl
 	depends = pari
 	depends = readline
diff --git a/extra/giac/PKGBUILD b/extra/giac/PKGBUILD
index b274557bb..251e77ff0 100644
--- a/extra/giac/PKGBUILD
+++ b/extra/giac/PKGBUILD
@@ -6,7 +6,7 @@
 pkgname=giac
 _pkgver=1.9.0-995
 pkgver=${_pkgver//-/.}
-pkgrel=1
+pkgrel=2
 pkgdesc='A free computer algebra system'
 arch=(x86_64)
 url='http://www-fourier.ujf-grenoble.fr/~parisse/giac.html'
@@ -29,13 +29,13 @@ depends=(blas
          libusb
          mpfi
          mpfr
+         nauty
          ntl
          pari
          readline
          zlib)
 makedepends=(hevea
              libjpeg-turbo
-             nauty
              python
              texlive-latexrecommended
              texlive-mathscience)