diff --git a/tests/driver_soft_uart/Makefile.ci b/tests/driver_soft_uart/Makefile.ci
index 75912a97e3..3585ad2b49 100644
--- a/tests/driver_soft_uart/Makefile.ci
+++ b/tests/driver_soft_uart/Makefile.ci
@@ -4,4 +4,6 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-nano \
     arduino-uno \
     atmega328p \
+    nucleo-f031k6 \
+    stm32f030f4-demo \
     #