diff --git a/buildroot-external/configs/rpi4_64-gui_defconfig b/buildroot-external/configs/rpi4_64-gui_defconfig
index 227ff18a..cfd44f44 100644
--- a/buildroot-external/configs/rpi4_64-gui_defconfig
+++ b/buildroot-external/configs/rpi4_64-gui_defconfig
@@ -359,6 +359,7 @@ BR2_PACKAGE_PYTHON_PYUSB=y
 BR2_PACKAGE_PYTHON_RPI_GPIO=y
 BR2_PACKAGE_PYTHON_SDNOTIFY=y
 BR2_PACKAGE_PYTHON_SERIAL=y
+BR2_PACKAGE_PYTHON_SMBUS_CFFI=y
 BR2_PACKAGE_PYTHON_SMMAP2=y
 BR2_PACKAGE_PYTHON_SPIDEV=y
 BR2_PACKAGE_PYTHON_SYSTEMD=y