diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index de9039d..093c741 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -8,9 +8,8 @@ pkgdesc='Perform multipart-post requests using Faraday'
 arch=('any')
 url="https://github.com/lostisland/${_gemname}"
 license=('MIT')
-depends=('ruby')
+depends=('ruby' 'ruby-faraday' 'ruby-faraday-multipart')
 makedepends=('ruby-rspec')
-checkdepends=('ruby-faraday' 'ruby-webmock' 'ruby-multipart-parser' 'ruby-rack-test')
 options=('!emptydirs')
 source=("${url}/archive/v${pkgver}/${_gemname}-v${pkgver}.tar.gz")
 sha512sums=('d3d50c6ccca97b3c7f076a45f0be92c9d601a005328d09397d8ac56492688296cfc2e61327389e10d4989df957bc76be7c270b6cbae3b9b2b8023fc9da265698')
@@ -23,23 +22,38 @@ prepare() {
 }
 
 build() {
-  cd "${srcdir}/${_gemname}-${pkgver}"
+  cd "${_gemname}-${pkgver}"
+
+  local _gemdir="$(gem env gemdir)"
+
   gem build "${_gemname}.gemspec"
+
+  gem install \
+    --local \
+    --verbose \
+    --ignore-dependencies \
+    --no-user-install \
+    --install-dir "tmp_install/${_gemdir}" \
+    --bindir "tmp_install/usr/bin" \
+    "${_gemname}-${pkgver}.gem"
+
+  # remove unrepreducible files
+  rm -rf "tmp_install/${_gemdir}/cache/"
 }
 
 check() {
-  cd "${srcdir}/${_gemname}-${pkgver}"
-  rspec
+  cd "${_gemname}-${pkgver}"
+
+  local _gemdir="$(gem env gemdir)"
+
+  GEM_HOME="tmp_install/${_gemdir}" rake spec
 }
 
 package() {
-cd "${srcdir}/${_gemname}-${pkgver}"
-  local _gemdir="$(gem env gemdir)"
-  gem install --verbose --ignore-dependencies --no-user-install --install-dir "${pkgdir}/${_gemdir}" --bindir "${pkgdir}/usr/bin" "${_gemname}-${pkgver}.gem"
+  cd "${srcdir}/${_gemname}-${pkgver}"
 
-  install -Dm 644 LICENSE.md -t "${pkgdir}/usr/share/licenses/${pkgname}/"
+  cp -a tmp_install/* "${pkgdir}"
 
-  install -Dm 644 README.md CHANGELOG.md -t "${pkgdir}/usr/share/doc/${pkgname}"
-
-  rm -rf "${pkgdir}/${_gemdir}/cache"
+  install -Dm 0644 LICENSE.md -t "${pkgdir}/usr/share/licenses/${pkgname}/"
+  install -Dm 0644 README.md CHANGELOG.md -t "${pkgdir}/usr/share/doc/${pkgname}"
 }