diff --git a/target/linux/kirkwood/Makefile b/target/linux/kirkwood/Makefile
index 241fc614c4..44eaf925a1 100644
--- a/target/linux/kirkwood/Makefile
+++ b/target/linux/kirkwood/Makefile
@@ -12,6 +12,7 @@ CPU_TYPE:=xscale
 SUBTARGETS:=generic
 
 KERNEL_PATCHVER:=6.1
+KERNEL_TESTING_PATCHVER:=6.6
 
 include $(INCLUDE_DIR)/target.mk