diff --git a/trunk/PKGBUILD b/trunk/PKGBUILD
index f0d9f4c..735fdee 100644
--- a/trunk/PKGBUILD
+++ b/trunk/PKGBUILD
@@ -9,12 +9,16 @@ arch=('x86_64')
 url="http://openlab.ring.gr.jp/skk/"
 license=('GPL2')
 depends=('gdbm' 'glib2')
-optdepends=('ruby' 'python2' 'perl')
-source=(http://openlab.ring.gr.jp/skk/tools/${pkgname}-${pkgver}.tar.gz)
-sha512sums=('8749dfc4f18474db860d8b7cd85fadfc00327b199addb31a339aa78dd66cb98032429664bdad4b47176b5b64b156b7264bc35a284861f6b9ec8cc9979d4d5ce1')
+optdepends=('ruby' 'python: for skk2cdb.py' 'perl')
+source=(http://openlab.ring.gr.jp/skk/tools/${pkgname}-${pkgver}.tar.gz
+        skktools-skk2cdb-python3.patch::https://github.com/skk-dev/skktools/commit/dfde96678a4a9f086c50e8130ca61e68af428663.patch)
+sha512sums=('8749dfc4f18474db860d8b7cd85fadfc00327b199addb31a339aa78dd66cb98032429664bdad4b47176b5b64b156b7264bc35a284861f6b9ec8cc9979d4d5ce1'
+            'f45c77da33a9135ca8fec81bb7fb2df667b9fcbbd3e7ebc25dcfee4cdfe24b88cb8161af8742ee06ba697819caaae4c45277fd13de3ccf70e44efa7dc99bf8d5')
 
 prepare() {
   mv skktools-skktools-1_3_4 $pkgname-$pkgver
+  cd $pkgname-$pkgver
+  patch -p1 -i ../skktools-skk2cdb-python3.patch
 }
 
 build() {
@@ -22,8 +26,6 @@ build() {
 
   ./configure --prefix=/usr --with-gdbm
   make
-
-  sed -i '1s|python|&2|' skk2cdb.py
 }
 
 package() {