diff --git a/mingw-w64-rkdeveloptool/PKGBUILD b/mingw-w64-rkdeveloptool/PKGBUILD
index 5891d8b70b..73247e3907 100644
--- a/mingw-w64-rkdeveloptool/PKGBUILD
+++ b/mingw-w64-rkdeveloptool/PKGBUILD
@@ -3,7 +3,7 @@
 _realname=rkdeveloptool
 pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
-pkgver=1.0
+pkgver=r70.21b25fd
 pkgrel=1
 _commit='21b25fd4a70331819b557fe93015b635b9594543'
 pkgdesc="rkdeveloptool is a tool from Rockchip to communicate with Rockusb devices (mingw-w64)"
@@ -19,6 +19,12 @@ source=("rkdeveloptool"::"git+https://github.com/rockchip-linux/rkdeveloptool.gi
 sha256sums=('SKIP')
 install=driver-instructions.install
 
+# updates pkgver variable since we are using git commit
+pkgver() {
+    cd "${srcdir}/${_realname}"
+    printf 'r%s.%s' "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+
 prepare() {
   cd "${srcdir}/${_realname}"
   aclocal