diff --git a/linux-tools/trunk/PKGBUILD b/linux-tools/trunk/PKGBUILD
index 7ac84fdcb..ee7e781f1 100644
--- a/linux-tools/trunk/PKGBUILD
+++ b/linux-tools/trunk/PKGBUILD
@@ -38,7 +38,7 @@ makedepends+=('readline' 'zlib' 'libelf' 'libcap' 'python-docutils')
 # turbostat deps
 makedepends+=('libcap')
 groups=("$pkgbase")
-source=("git+https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git#tag=v${pkgver//_/-}"
+source=("git+https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git?signed#tag=v${pkgver//_/-}"
 #        "https://cdn.kernel.org/pub/linux/kernel/v5.x/patch-$pkgver.1.xz"
         'cpupower.default'
         'cpupower.systemd'
@@ -55,6 +55,10 @@ sha256sums=('SKIP'
             '16855c197d2334f820cb190312a5a7fffe9165189db01344a957e582e39e17d8'
             'b1315cb77a35454e1af9172f821a52e2a0cb18561be05a340d21cf337b01ae61'
             '2d5e2f8d40b6f19bf2e1dead57ca105d72098fb0b418c09ff2e0cb91089710af')
+validpgpkeys=(
+  'ABAF11C65A2970B130ABE3C479BE3E4300411886'  # Linus Torvalds
+  '647F28654894E3BD457199BE38DBBDC86092693E'  # Greg Kroah-Hartman
+)
 
 prepare() {
   cd linux