diff --git a/target/linux/bcm4908/Makefile b/target/linux/bcm4908/Makefile
index d515912829a..b4d238eff6d 100644
--- a/target/linux/bcm4908/Makefile
+++ b/target/linux/bcm4908/Makefile
@@ -10,6 +10,7 @@ CPU_TYPE:=cortex-a53
 SUBTARGETS:=generic
 
 KERNEL_PATCHVER:=6.1
+KERNEL_TESTING_PATCHVER:=6.6
 
 define Target/Description
 	Build firmware images for Broadcom BCM4908 SoC family routers.