diff --git a/Config.in.legacy b/Config.in.legacy
index 75d6c723a9..2b8dc3b1ee 100644
--- a/Config.in.legacy
+++ b/Config.in.legacy
@@ -153,6 +153,13 @@ config BR2_GDB_VERSION_8_0
 	  The 8.0.x version of gdb has been removed. Use a newer
 	  version instead.
 
+config BR2_KERNEL_HEADERS_4_20
+	bool "kernel headers version 4.20.x are no longer supported"
+	select BR2_LEGACY
+	help
+	  Version 4.20.x of the Linux kernel headers are no longer
+	  maintained upstream and are now removed.
+
 comment "Legacy options removed in 2019.05"
 
 config BR2_CSKY_DSP