diff --git a/target/linux/realtek/Makefile b/target/linux/realtek/Makefile
index cd86bdc11e6..673997f5508 100644
--- a/target/linux/realtek/Makefile
+++ b/target/linux/realtek/Makefile
@@ -10,6 +10,7 @@ FEATURES:=ramdisk squashfs
 SUBTARGETS:=rtl838x rtl839x rtl930x rtl931x
 
 KERNEL_PATCHVER:=5.15
+KERNEL_TESTING_PATCHVER:=6.6
 
 define Target/Description
 	Build firmware images for Realtek RTL83xx based boards.