diff --git a/.gitmodules b/.gitmodules
index a95e64ee6..5c79ea910 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -131,3 +131,6 @@
 	path = hw/mcu/broadcom
 	url = https://github.com/adafruit/broadcom-peripherals.git
 	branch = main-build
+[submodule "hw/mcu/infineon/mtb-xmclib-cat3"]
+	path = hw/mcu/infineon/mtb-xmclib-cat3
+	url = https://github.com/Infineon/mtb-xmclib-cat3.git
diff --git a/hw/bsp/xmc4000/family.mk b/hw/bsp/xmc4000/family.mk
index fc417d41d..e5b9f7b1a 100644
--- a/hw/bsp/xmc4000/family.mk
+++ b/hw/bsp/xmc4000/family.mk
@@ -1,7 +1,7 @@
 UF2_FAMILY_ID = 0x00
 MCU_DIR = hw/mcu/infineon/mtb-xmclib-cat3
 
-#DEPS_SUBMODULES += $(MCU_DIR)
+DEPS_SUBMODULES += $(MCU_DIR)
 
 include $(TOP)/$(BOARD_PATH)/board.mk
 
diff --git a/hw/mcu/infineon/mtb-xmclib-cat3 b/hw/mcu/infineon/mtb-xmclib-cat3
new file mode 160000
index 000000000..daf5500d0
--- /dev/null
+++ b/hw/mcu/infineon/mtb-xmclib-cat3
@@ -0,0 +1 @@
+Subproject commit daf5500d03cba23e68c2f241c30af79cd9d63880