diff --git a/target/linux/rockchip/Makefile b/target/linux/rockchip/Makefile
index 42d75e3b4f..75423f70ef 100644
--- a/target/linux/rockchip/Makefile
+++ b/target/linux/rockchip/Makefile
@@ -8,6 +8,7 @@ FEATURES:=ext4 audio usb usbgadget display gpio fpu pci pcie rootfs-part boot-pa
 SUBTARGETS:=armv8
 
 KERNEL_PATCHVER:=6.1
+KERNEL_TESTING_PATCHVER:=6.6
 
 define Target/Description
 	Build firmware image for Rockchip SoC devices.