diff --git a/Gopkg.lock b/Gopkg.lock
index 3166c570..ad2cda3d 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -3,11 +3,11 @@
 
 [[projects]]
   branch = "master"
-  digest = "1:055364e7afd5d53ddf82407296aa23c52b753e9ed014ce28456f4c16529f62ab"
+  digest = "1:02083a13eba76620ed7548af199aab0e7955ba059997aac578d6341582a3e065"
   name = "github.com/Sabayon/pkgs-checker"
   packages = ["pkg/gentoo"]
   pruneopts = "UT"
-  revision = "4fbbdaefc15bf6f16b7950481d8e92e2a19c79f7"
+  revision = "673f8f976791c3acca0af31769cffed3d0ac8c68"
 
 [[projects]]
   digest = "1:f7499626626215283473733b7428e3b26457a92cf9dbb1518262fbc4f7523423"
diff --git a/Gopkg.toml b/Gopkg.toml
new file mode 100644
index 00000000..ff87a8e8
--- /dev/null
+++ b/Gopkg.toml
@@ -0,0 +1,50 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/crillab/gophersat"
+  version = "1.1.7"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/jinzhu/copier"
+
+[[constraint]]
+  name = "github.com/onsi/ginkgo"
+  version = "1.8.0"
+
+[[constraint]]
+  name = "github.com/onsi/gomega"
+  version = "1.5.0"
+
+[[constraint]]
+  name = "github.com/Sabayon/pkgs-checker"
+  branch = "master"
+
+[prune]
+  go-tests = true
+  unused-packages = true
diff --git a/vendor/github.com/Sabayon/pkgs-checker/pkg/gentoo/pkg.go b/vendor/github.com/Sabayon/pkgs-checker/pkg/gentoo/pkg.go
index 871d4577..b410dfaf 100644
--- a/vendor/github.com/Sabayon/pkgs-checker/pkg/gentoo/pkg.go
+++ b/vendor/github.com/Sabayon/pkgs-checker/pkg/gentoo/pkg.go
@@ -101,6 +101,31 @@ func (p *GentooPackage) GetPackageName() (ans string) {
 	return
 }
 
+func (p *GentooPackage) GetP() string {
+	return fmt.Sprintf("%s-%s", p.Name, p.GetPV())
+}
+
+func (p *GentooPackage) GetPN() string {
+	return p.Name
+}
+
+func (p *GentooPackage) GetPV() string {
+	return fmt.Sprintf("%s", p.Version)
+}
+
+func (p *GentooPackage) GetPVR() (ans string) {
+	if p.VersionSuffix != "" {
+		ans = fmt.Sprintf("%s%s", p.Version, p.VersionSuffix)
+	} else {
+		ans = p.GetPV()
+	}
+	return
+}
+
+func (p *GentooPackage) GetPF() string {
+	return fmt.Sprintf("%s-%s", p.GetPN(), p.GetPVR())
+}
+
 func (p *GentooPackage) Admit(i *GentooPackage) (bool, error) {
 	var ans bool = false
 	var v1 *version.Version = nil
@@ -263,7 +288,7 @@ func ParsePackageStr(pkg string) (*GentooPackage, error) {
 	}
 
 	regexPkg := regexp.MustCompile(
-		fmt.Sprintf("[-](%s|%s|%s|%s|%s|%s)((%s|%s|%s|%s|%s|%s)+)*$",
+		fmt.Sprintf("[-](%s|%s|%s|%s|%s|%s)((%s|%s|%s|%s|%s|%s|%s)+)*$",
 			// Version regex
 			// 1.1
 			"[0-9]+[.][0-9]+[a-z]*",
@@ -282,6 +307,8 @@ func ParsePackageStr(pkg string) (*GentooPackage, error) {
 			"_p[0-9]+",
 			"_pre[0-9]*",
 			"_rc[0-9]+",
+			// handle also rc without number
+			"_rc",
 			"_alpha",
 			"_beta",
 		),