diff --git a/tests/unittests/Makefile.ci b/tests/unittests/Makefile.ci
index 62260b9093..c2324e90cc 100644
--- a/tests/unittests/Makefile.ci
+++ b/tests/unittests/Makefile.ci
@@ -8,6 +8,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     arduino-mkrwan1300 \
     arduino-mkrzero \
     arduino-nano \
+    arduino-nano-33-iot \
     arduino-uno \
     arduino-zero \
     atmega256rfr2-xpro \