diff --git a/stk/PKGBUILD b/stk/PKGBUILD
index e1f005ee2..93658e1f4 100644
--- a/stk/PKGBUILD
+++ b/stk/PKGBUILD
@@ -1,10 +1,5 @@
-# Contributions from Arch:
-# Maintainer: Lukas Fleischer <archlinux at cryptocrack dot de>
-# Contributor: Ray Rashif <schiv@archlinux.org>
-# Contributor: Mateusz Herych <heniekk@gmail.com>
-
 pkgname=stk
-pkgver=4.5.0
+pkgver=4.5.1
 pkgrel=1
 pkgdesc='The Synthesis ToolKit in C++'
 arch=('x86_64')
@@ -16,9 +11,9 @@ optdepends=('tk: run provided demos/samples')
 source=("http://ccrma.stanford.edu/software/stk/release/$pkgname-$pkgver.tar.gz"
         "$pkgname.license"
         runtime.patch)
-md5sums=('2fd27e51dd0df92edcf96bd9080db76d'
-         'a0163d75a5f516b6c93f4fc948acff73'
-         '36551c348340307c765fde85d4336e73')
+sha1sums=('138c2504dbc12b60b676feb58a03d49a8412a036'
+          '175eff9fade08cf871799335acfebd4b8d023979'
+          '962bf8c9ed71d79cddaf1d391d59fd8c44a58fbb')
 
 build() {
   cd "$srcdir/$pkgname-$pkgver"