diff --git a/Gopkg.lock b/Gopkg.lock
index 158a2189..5d78eeac 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -5,7 +5,7 @@
   branch = "master"
   name = "github.com/jguer/go-alpm"
   packages = ["."]
-  revision = "11d6aadda57c8fb4f93969333cb990677d28d4f9"
+  revision = "6150b61c07385c54c6dd8087b9be05cf8b064424"
 
 [[projects]]
   branch = "master"
@@ -17,7 +17,7 @@
   branch = "master"
   name = "github.com/mikkeloscar/gopkgbuild"
   packages = ["."]
-  revision = "32274fc52aa8f5eb28711da734179e9aea27b31f"
+  revision = "7b0e7c63b22efc73e1c10e6f3117fdc03cd21816"
 
 [solve-meta]
   analyzer-name = "dep"
diff --git a/install.go b/install.go
index e5225059..3806aada 100644
--- a/install.go
+++ b/install.go
@@ -546,9 +546,10 @@ func downloadPkgBuilds(pkgs []*rpc.Pkg, targets stringSet, bases map[string][]*r
 			pkgbuild, err := gopkg.ParseSRCINFO(dir)
 
 			if err == nil {
-				version, err := gopkg.NewCompleteVersion(pkg.Version)
-				if err == nil {
-					if !version.Newer(pkgbuild.Version()) {
+				versionRPC, errR := gopkg.NewCompleteVersion(pkg.Version)
+				versionPKG, errP := gopkg.NewCompleteVersion(pkgbuild.Version())
+				if errP == nil && errR == nil {
+					if !versionRPC.Newer(versionPKG) {
 						str := bold(cyan("::") + " PKGBUILD up to date, Skipping (%d/%d): %s\n")
 						fmt.Printf(str, k+1, len(pkgs), cyan(formatPkgbase(pkg, bases)))
 						continue
diff --git a/vendor/github.com/mikkeloscar/gopkgbuild/pkgbuild.go b/vendor/github.com/mikkeloscar/gopkgbuild/pkgbuild.go
index f1f02b12..ac267f7f 100644
--- a/vendor/github.com/mikkeloscar/gopkgbuild/pkgbuild.go
+++ b/vendor/github.com/mikkeloscar/gopkgbuild/pkgbuild.go
@@ -616,7 +616,7 @@ func isLowerAlpha(c rune) bool {
 
 // check if c is a valid pkgname char
 func isValidPkgnameChar(c rune) bool {
-	return isLowerAlpha(c) || isDigit(c) || c == '@' || c == '.' || c == '_' || c == '+' || c == '-'
+	return isAlphaNumeric(c) || c == '@' || c == '.' || c == '_' || c == '+' || c == '-'
 }
 
 // check if c is a valid pkgver char
diff --git a/vendor/github.com/mikkeloscar/gopkgbuild/version.go b/vendor/github.com/mikkeloscar/gopkgbuild/version.go
index cae63a87..1695377d 100644
--- a/vendor/github.com/mikkeloscar/gopkgbuild/version.go
+++ b/vendor/github.com/mikkeloscar/gopkgbuild/version.go
@@ -74,33 +74,18 @@ func NewCompleteVersion(s string) (*CompleteVersion, error) {
 	return nil, fmt.Errorf("invalid version format: %s", s)
 }
 
-// Older returns true if a is older than the argument version string
-func (a *CompleteVersion) Older(v string) bool {
-	b, err := NewCompleteVersion(v)
-	if err != nil {
-		return false
-	}
-
+// Older returns true if a is older than the argument version
+func (a *CompleteVersion) Older(b *CompleteVersion) bool {
 	return a.cmp(b) == -1
 }
 
-// Newer returns true if a is newer than the argument version string
-func (a *CompleteVersion) Newer(v string) bool {
-	b, err := NewCompleteVersion(v)
-	if err != nil {
-		return false
-	}
-
+// Newer returns true if a is newer than the argument version
+func (a *CompleteVersion) Newer(b *CompleteVersion) bool {
 	return a.cmp(b) == 1
 }
 
-// Equal returns true if a is equal to the argument version string
-func (a *CompleteVersion) Equal(v string) bool {
-	b, err := NewCompleteVersion(v)
-	if err != nil {
-		return false
-	}
-
+// Equal returns true if a is equal to the argument version
+func (a *CompleteVersion) Equal(b *CompleteVersion) bool {
 	return a.cmp(b) == 0
 }