diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index 43687ae4..052f34e6 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -10,18 +10,15 @@ url="https://github.com/ultrajson/ultrajson"
 arch=('x86_64')
 license=('BSD')
 depends=('python')
-makedepends=('python-setuptools' 'python-pip')
+makedepends=('python-setuptools' 'python-pip' 'python-setuptools-scm')
 checkdepends=('python-six' 'python-pytest')
 source=(https://github.com/ultrajson/ultrajson/archive/$pkgver/$pkgname-$pkgver.tar.gz)
 sha512sums=('ec234917e59952390ec48e51137b896084e8be3312718bdd661536a453459ba29f7ae2141fee4b3135f2077fc43ee418407e459a6dc0be8833c6a3c2f1147d06')
 b2sums=('f68f95609894ff9413118a68179bf28fc23fcc5b89cf28f0500857e0759ce1678c6ba332bd0d4fb6bff6c35458e2a8702c533910526a1fbcf348809f3625a3e1')
 
-prepare() {
-  sed '/setup_requires=\["setuptools_scm"\],/d' -i ${_pkgname}-${pkgver}/setup.py
-  sed "s/{version}/$pkgver/" ${_pkgname}-${pkgver}/python/version_template.h > ${_pkgname}-${pkgver}/python/version.h
-}
-
 build() {
+  export SETUPTOOLS_SCM_PRETEND_VERSION=$pkgver
+
   cd ${_pkgname}-${pkgver}
   python setup.py build
 }