diff --git a/target/linux/kirkwood/Makefile b/target/linux/kirkwood/Makefile
index e972b8e58723f0..c7a25451c9cde1 100644
--- a/target/linux/kirkwood/Makefile
+++ b/target/linux/kirkwood/Makefile
@@ -11,6 +11,7 @@ FEATURES:=usb nand squashfs ramdisk
 CPU_TYPE:=xscale
 
 KERNEL_PATCHVER:=5.10
+KERNEL_TESTING_PATCHVER:=5.15
 
 include $(INCLUDE_DIR)/target.mk