diff --git a/tests/Makefile.test b/tests/Makefile.test
index 794242ca..1804ba1c 100644
--- a/tests/Makefile.test
+++ b/tests/Makefile.test
@@ -20,4 +20,10 @@ make FQBN=Infineon:xmc:XMC4700_Relax_Kit PORT=COM28 UNITY_PATH=\Unity test_wire_
 
 # 2 boards
 make FQBN=Infineon:xmc:XMC4700_Relax_Kit PORT=COM85 test_wire_connected2_masterpingpong monitor
-make FQBN=Infineon:xmc:XMC4700_Relax_Kit PORT=COM28 UNITY_
\ No newline at end of file
+make FQBN=Infineon:xmc:XMC4700_Relax_Kit PORT=COM28 test_wire_connected2_slavepingpong monitor
+
+## UART
+
+# 2 boards
+make FQBN=Infineon:xmc:XMC4700_Relax_Kit PORT=COM71 test_uart_connected2_tx monitor
+make FQBN=Infineon:xmc:XMC4700_Relax_Kit PORT=COM28 test_uart_connected2_rx monitor
\ No newline at end of file
diff --git a/tests/arduino-core-tests b/tests/arduino-core-tests
index 6f62097d..0052b910 160000
--- a/tests/arduino-core-tests
+++ b/tests/arduino-core-tests
@@ -1 +1 @@
-Subproject commit 6f62097d72522b52848e3f24d01220afcbfae1cc
+Subproject commit 0052b910df063e45f351575220f53b0cec295eec
diff --git a/tests/hil-unity-checklist.yaml b/tests/hil-unity-checklist.yaml
index 1e60176d..e56a53cd 100644
--- a/tests/hil-unity-checklist.yaml
+++ b/tests/hil-unity-checklist.yaml
@@ -12,6 +12,11 @@ Infineon.xmc.XMC4700_Relax_Kit:
       - "test_wire_connected2_masterpingpong"
     2:
       - "test_wire_connected1_pingpong"
+  
+  Serial:
+    1:
+      - "test_uart_connected2_tx"
+      - "test_uart_connected2_rx"
 
 
 Infineon.xmc.XMC1400_XMC2GO: