diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in
index 0000713331..8941e0f3cd 100644
--- a/toolchain/toolchain-common.in
+++ b/toolchain/toolchain-common.in
@@ -258,10 +258,15 @@ config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
 	bool
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
 
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
+
 # This order guarantees that the highest version is set, as kconfig
 # stops affecting a value on the first matching default.
 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 	string
+	default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
 	default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
 	default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
 	default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
diff --git a/toolchain/toolchain-external/toolchain-external-custom/Config.in.options b/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
index e35ef8784d..70c7d8e3c3 100644
--- a/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
+++ b/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
@@ -108,6 +108,10 @@ choice
 	    m = ( LINUX_VERSION_CODE >> 8  ) & 0xFF
 	    p = ( LINUX_VERSION_CODE >> 0  ) & 0xFF
 
+config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_15
+	bool "4.15.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
+
 config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_14
 	bool "4.14.x"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14