diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index 3627a06..6cad90b 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -225,6 +225,7 @@
 CONFIG_VIDEO_BMP_RLE8=y
 # CONFIG_WATCHDOG_AUTOSTART is not set
 CONFIG_WDT=y
+CONFIG_WDT_GPIO=y
 CONFIG_WDT_SANDBOX=y
 CONFIG_FS_CBFS=y
 CONFIG_FS_CRAMFS=y